Why Your Google Ads Aren't Working: 10 Mistakes That Are Costing You Money
You have set up your Google Ads account, written your ads, set your budget, and waited. But the results are not what you expected. Leads are too expensive, clicks are not converting, and you are starting to wonder if Google Ads even works for your business. The good news is that in almost every case, the problem is not the platform — it is how the account is set up and managed. After auditing hundreds of Google Ads accounts for UK businesses, we see the same mistakes repeated over and over. Here are the 10 most common reasons your Google Ads are not working, and exactly how to fix each one.
1. You Have No Conversion Tracking (or It Is Set Up Wrong)
This is the single most common and most damaging mistake we see. Without accurate conversion tracking, you have no idea which keywords, ads, or campaigns are actually generating leads or sales. You are essentially spending money in the dark.
Google’s automated bidding strategies (which most accounts now use) rely entirely on conversion data to optimise. If your tracking is missing, inaccurate, or double-counting, Google’s algorithm is making decisions based on bad data — and your results will reflect that.
How to fix it: Set up Google Ads conversion tracking for every valuable action on your website: form submissions, phone calls, purchases, live chat conversations. Use Google Tag Manager for clean implementation. Enable enhanced conversions to improve data accuracy. If you generate leads that close offline, set up offline conversion tracking so Google knows which clicks actually turned into revenue.
We have seen accounts double their lead volume simply by fixing conversion tracking, because the algorithm finally had the data it needed to optimise properly.
Google’s automated bidding strategies (which most accounts now use) rely entirely on conversion data to optimise. If your tracking is missing, inaccurate, or double-counting, Google’s algorithm is making decisions based on bad data — and your results will reflect that.
How to fix it: Set up Google Ads conversion tracking for every valuable action on your website: form submissions, phone calls, purchases, live chat conversations. Use Google Tag Manager for clean implementation. Enable enhanced conversions to improve data accuracy. If you generate leads that close offline, set up offline conversion tracking so Google knows which clicks actually turned into revenue.
We have seen accounts double their lead volume simply by fixing conversion tracking, because the algorithm finally had the data it needed to optimise properly.
2. Your Targeting Is Too Broad
A common approach for UK businesses is to target the entire country with a modest budget. The problem is that spreading a £1,000 monthly budget across the whole of the UK means your ads barely show in any single area. You get a trickle of clicks spread across dozens of locations, not enough data for Google to optimise, and not enough presence in any one area to build momentum.
How to fix it: Start focused. If you serve a specific city or region, target that area precisely. If you serve the whole UK, prioritise your highest-value regions first. Get those areas profitable, then expand. A £1,000 budget focused on Birmingham will deliver far better results than that same budget diluted across every city in England.
Also check your location targeting settings. Make sure you are targeting "Presence: People in or regularly in your targeted locations" rather than the default option which includes people who show interest in your locations. The default setting often shows your ads to people who will never become customers.
How to fix it: Start focused. If you serve a specific city or region, target that area precisely. If you serve the whole UK, prioritise your highest-value regions first. Get those areas profitable, then expand. A £1,000 budget focused on Birmingham will deliver far better results than that same budget diluted across every city in England.
Also check your location targeting settings. Make sure you are targeting "Presence: People in or regularly in your targeted locations" rather than the default option which includes people who show interest in your locations. The default setting often shows your ads to people who will never become customers.
3. You Are Ignoring Negative Keywords
Every Google Ads account leaks money through irrelevant search terms. If you are not regularly reviewing your search terms report and adding negative keywords, you are guaranteed to be wasting budget.
We routinely audit accounts where 30-50% of the ad spend goes to completely irrelevant searches. A solicitor paying for clicks from people searching for "free legal advice". A premium kitchen company paying for "cheap kitchen units". An accountant paying for clicks on "accounting jobs" and "accounting courses".
How to fix it: Review your search terms report weekly (at minimum). Add irrelevant terms as negative keywords at the campaign or account level. Build a comprehensive negative keyword list from day one that includes obvious irrelevant terms for your industry: "free", "cheap", "DIY", "jobs", "salary", "coursera", "youtube", "reddit", and similar.
Make this a recurring task. New irrelevant search terms appear constantly, and the only way to catch them is through regular review.
We routinely audit accounts where 30-50% of the ad spend goes to completely irrelevant searches. A solicitor paying for clicks from people searching for "free legal advice". A premium kitchen company paying for "cheap kitchen units". An accountant paying for clicks on "accounting jobs" and "accounting courses".
How to fix it: Review your search terms report weekly (at minimum). Add irrelevant terms as negative keywords at the campaign or account level. Build a comprehensive negative keyword list from day one that includes obvious irrelevant terms for your industry: "free", "cheap", "DIY", "jobs", "salary", "coursera", "youtube", "reddit", and similar.
Make this a recurring task. New irrelevant search terms appear constantly, and the only way to catch them is through regular review.
4. You Are Sending All Traffic to Your Homepage
Your homepage is designed to serve everyone — existing customers, potential customers, job seekers, investors. It is a general introduction to your business. But someone who clicks on your Google Ad for "emergency boiler repair London" does not want a general introduction. They want to know you can fix their boiler, in London, today.
Sending all Google Ads traffic to your homepage is one of the most expensive mistakes you can make. Conversion rates from homepage traffic are typically 2-5x lower than from dedicated landing pages.
How to fix it: Create dedicated landing pages for your key campaigns. Each landing page should match the searcher’s intent, include the keywords they searched for, highlight relevant benefits and proof points, and have a clear single call to action. The page should answer three questions immediately: Are you in the right place? Can this business solve your problem? What should you do next?
You do not need hundreds of landing pages. Start with one per campaign theme, and test different versions to improve conversion rates over time.
Sending all Google Ads traffic to your homepage is one of the most expensive mistakes you can make. Conversion rates from homepage traffic are typically 2-5x lower than from dedicated landing pages.
How to fix it: Create dedicated landing pages for your key campaigns. Each landing page should match the searcher’s intent, include the keywords they searched for, highlight relevant benefits and proof points, and have a clear single call to action. The page should answer three questions immediately: Are you in the right place? Can this business solve your problem? What should you do next?
You do not need hundreds of landing pages. Start with one per campaign theme, and test different versions to improve conversion rates over time.
5. Your Ad Copy Is Weak or Generic
If your ads look the same as every other competitor’s ads, you will get mediocre click-through rates and pay more per click as a result. Generic headlines like "Professional Services" or "Quality Products" say nothing and convince no one.
Weak ad copy hurts you twice: you get fewer clicks (lower CTR), and you pay more per click (Google rewards higher CTRs with lower costs through Quality Score).
How to fix it: Make your ads specific. Include numbers, results, and concrete details. "500+ UK Businesses Served" is better than "Trusted Provider". "Free Quote in 2 Hours" is better than "Contact Us Today". "4.9★ on Google — 200+ Reviews" is better than "High Quality Service".
Use all available ad extensions: sitelinks, callouts, structured snippets, call extensions. These give your ad more real estate on the page and provide additional reasons to click.
Most importantly, differentiate. What do you offer that competitors do not? Lead with that in your headlines.
Weak ad copy hurts you twice: you get fewer clicks (lower CTR), and you pay more per click (Google rewards higher CTRs with lower costs through Quality Score).
How to fix it: Make your ads specific. Include numbers, results, and concrete details. "500+ UK Businesses Served" is better than "Trusted Provider". "Free Quote in 2 Hours" is better than "Contact Us Today". "4.9★ on Google — 200+ Reviews" is better than "High Quality Service".
Use all available ad extensions: sitelinks, callouts, structured snippets, call extensions. These give your ad more real estate on the page and provide additional reasons to click.
Most importantly, differentiate. What do you offer that competitors do not? Lead with that in your headlines.
Want Us to Audit Your Google Ads Account?
We offer a free, no-obligation Google Ads audit for UK businesses. We will review your account structure, tracking setup, keyword strategy, ad copy, and bidding approach — and tell you exactly what is working, what is not, and what to fix first. No sales pitch, just practical recommendations you can act on. Book your free audit today.
Book a Free Strategy Call6. You Are Using the Wrong Bidding Strategy
Google offers multiple bidding strategies, and using the wrong one for your situation can burn through budget quickly. A common mistake is using "Maximise Clicks" (which gets you the most clicks regardless of quality) when you should be using "Maximise Conversions" or "Target CPA".
Another frequent issue is setting a Target CPA that is unrealistically low. If you tell Google you want conversions at £5 each in an industry where the average is £50, Google will either barely show your ads or target only the cheapest (usually lowest quality) traffic.
How to fix it: Match your bidding strategy to your goals and data. If you are just starting out and have fewer than 30 conversions per month, use "Maximise Conversions" to build data. Once you have consistent conversion volume, switch to "Target CPA" with a realistic target based on your actual data.
For e-commerce, use "Maximise Conversion Value" to start, then move to "Target ROAS" once you have enough data. Never use "Maximise Clicks" unless you are specifically running a brand awareness campaign where conversions are not the goal.
Another frequent issue is setting a Target CPA that is unrealistically low. If you tell Google you want conversions at £5 each in an industry where the average is £50, Google will either barely show your ads or target only the cheapest (usually lowest quality) traffic.
How to fix it: Match your bidding strategy to your goals and data. If you are just starting out and have fewer than 30 conversions per month, use "Maximise Conversions" to build data. Once you have consistent conversion volume, switch to "Target CPA" with a realistic target based on your actual data.
For e-commerce, use "Maximise Conversion Value" to start, then move to "Target ROAS" once you have enough data. Never use "Maximise Clicks" unless you are specifically running a brand awareness campaign where conversions are not the goal.
7. You Are Not Testing Anything
Many Google Ads accounts are set up once and never changed. The same ads run for months or years. The same landing pages are used without testing. The same keywords stay active regardless of performance. This "set and forget" approach guarantees declining results over time.
Google Ads is a dynamic platform. Competitors change their strategies, consumer behaviour shifts, and Google’s algorithm evolves. What worked six months ago may not work today.
How to fix it: Build testing into your routine. Test different headlines and descriptions in your responsive search ads. Test different landing page layouts, headlines, and calls to action. Test different audience segments and targeting options.
You do not need to test everything at once. Pick one element to test each month: this month test new ad headlines, next month test a new landing page layout, the month after test expanding to a new keyword group. Small, consistent improvements compound into significant performance gains over time.
Google Ads is a dynamic platform. Competitors change their strategies, consumer behaviour shifts, and Google’s algorithm evolves. What worked six months ago may not work today.
How to fix it: Build testing into your routine. Test different headlines and descriptions in your responsive search ads. Test different landing page layouts, headlines, and calls to action. Test different audience segments and targeting options.
You do not need to test everything at once. Pick one element to test each month: this month test new ad headlines, next month test a new landing page layout, the month after test expanding to a new keyword group. Small, consistent improvements compound into significant performance gains over time.
8. Your Account Structure Is a Mess
Account structure might sound like a technical detail, but it directly impacts performance. Common structural problems include: too many keywords crammed into a single ad group, campaigns mixing unrelated products or services, and no separation between brand and non-brand traffic.
Poor structure means your ads are less relevant to searches, your Quality Scores are lower, you pay more per click, and you cannot see clearly which parts of your business are profitable from ads.
How to fix it: Organise your account logically. Each campaign should focus on one product line, service, or theme. Within campaigns, ad groups should contain closely related keywords (ideally 5-15 keywords per ad group). Ad copy in each group should directly relate to the keywords.
Separate brand campaigns (people searching your business name) from non-brand campaigns (people searching for your products or services generically). Brand campaigns almost always have much higher conversion rates and lower costs, and mixing them with non-brand obscures your true acquisition costs.
If your account structure is severely messy, sometimes it is faster to rebuild from scratch than to try to untangle it.
Poor structure means your ads are less relevant to searches, your Quality Scores are lower, you pay more per click, and you cannot see clearly which parts of your business are profitable from ads.
How to fix it: Organise your account logically. Each campaign should focus on one product line, service, or theme. Within campaigns, ad groups should contain closely related keywords (ideally 5-15 keywords per ad group). Ad copy in each group should directly relate to the keywords.
Separate brand campaigns (people searching your business name) from non-brand campaigns (people searching for your products or services generically). Brand campaigns almost always have much higher conversion rates and lower costs, and mixing them with non-brand obscures your true acquisition costs.
If your account structure is severely messy, sometimes it is faster to rebuild from scratch than to try to untangle it.
9. You Are Ignoring the Mobile Experience
Over 60% of Google searches in the UK now happen on mobile devices. If your landing pages are slow, hard to navigate, or difficult to convert on a mobile phone, you are wasting more than half your ad spend.
Common mobile issues include: pages that take more than 3 seconds to load, forms with too many fields to fill in on a small screen, phone numbers that are not clickable, and calls to action that are buried below the fold.
How to fix it: Test your landing pages on a real mobile phone, not just the desktop emulator. Time how long they take to load. Try filling in your own forms on a phone screen. Check that your phone number is a clickable tel: link. Make sure your primary call to action is visible without scrolling.
Optimise page speed aggressively. Compress images, minimise code, use lazy loading. Google’s own data shows that 53% of mobile visitors leave a page that takes longer than 3 seconds to load. Every second of load time costs you conversions.
Consider mobile-specific landing pages with simplified layouts, larger buttons, and shorter forms. A form that works fine on desktop (8 fields) might need to be shortened to 3-4 fields on mobile.
Common mobile issues include: pages that take more than 3 seconds to load, forms with too many fields to fill in on a small screen, phone numbers that are not clickable, and calls to action that are buried below the fold.
How to fix it: Test your landing pages on a real mobile phone, not just the desktop emulator. Time how long they take to load. Try filling in your own forms on a phone screen. Check that your phone number is a clickable tel: link. Make sure your primary call to action is visible without scrolling.
Optimise page speed aggressively. Compress images, minimise code, use lazy loading. Google’s own data shows that 53% of mobile visitors leave a page that takes longer than 3 seconds to load. Every second of load time costs you conversions.
Consider mobile-specific landing pages with simplified layouts, larger buttons, and shorter forms. A form that works fine on desktop (8 fields) might need to be shortened to 3-4 fields on mobile.
10. You Have No Remarketing Strategy
Most visitors do not convert on their first visit. Depending on your industry, it can take 3-7 touchpoints before someone becomes a customer. If you are only running search ads and have no remarketing, you are paying to attract visitors who leave and never come back.
Remarketing (showing ads to people who already visited your website) is one of the highest-ROI activities in Google Ads. These people already know your brand and have shown interest — they just need a reminder or an additional reason to come back.
How to fix it: Set up remarketing audiences in Google Ads. At minimum, create audiences for: all website visitors (last 30 days), people who visited key pages but did not convert, and people who started but did not complete a form or checkout.
Run display remarketing campaigns showing relevant ads to these audiences. The budget does not need to be large — even £200-£500 per month in remarketing spend can significantly increase your overall conversion rate.
For even better results, use remarketing lists for search ads (RLSA). This lets you bid more aggressively when previous visitors search for your keywords again, ensuring you appear at the top when they are ready to convert.
Remarketing (showing ads to people who already visited your website) is one of the highest-ROI activities in Google Ads. These people already know your brand and have shown interest — they just need a reminder or an additional reason to come back.
How to fix it: Set up remarketing audiences in Google Ads. At minimum, create audiences for: all website visitors (last 30 days), people who visited key pages but did not convert, and people who started but did not complete a form or checkout.
Run display remarketing campaigns showing relevant ads to these audiences. The budget does not need to be large — even £200-£500 per month in remarketing spend can significantly increase your overall conversion rate.
For even better results, use remarketing lists for search ads (RLSA). This lets you bid more aggressively when previous visitors search for your keywords again, ensuring you appear at the top when they are ready to convert.
Written by Gal Shlomai
Founder, Advertising Precision
Gal helps UK businesses transform paid advertising into a predictable, profitable growth engine. With a tracking-first approach and founder-led campaigns, every pound of ad spend is accounted for.
Connect on LinkedInRelated Articles
Want Us to Audit Your Google Ads Account?
We offer a free, no-obligation Google Ads audit for UK businesses. We will review your account structure, tracking setup, keyword strategy, ad copy, and bidding approach — and tell you exactly what is working, what is not, and what to fix first. No sales pitch, just practical recommendations you can act on. Book your free audit today.
Book a Free Strategy Call