Most Google Ads campaigns that fail in the first few months don't fail because the business has a bad product or is in the wrong market. They fail because three specific settings, which Google defaults to in ways that benefit Google's revenue rather than yours, are left unchecked. Each one individually wastes money. Together, they can consume most of a new campaign's budget without generating meaningful results.
I picked up these patterns managing Google Ads for small businesses across North Wales over the past several years. A roofing contractor I audited last year had been running for four months, spending £800 a month, and their search terms report was full of "roofing felt DIY," "how to lay roof tiles," and "roofing apprenticeship," none of which were buyers. All three of the issues below were present in that account simultaneously.
These aren't obscure technical details. They're the first things I look at in any account audit.
1. Not understanding keyword match types
Google defaults new accounts to broad match for keywords. Broad match means your ad can appear for any search Google considers related to your keyword's "theme or intent." That's a very permissive definition, and in practice it means your ad for "plumber North Wales" might show for "plumbing training courses," "plumber salary UK," or "how to fix a tap," none of which represent someone about to hire you.
The problem is compounded by the fact that Google has widened the scope of match types over the years. What broad match does now is significantly more expansive than it was five years ago. The knock-on effect of this expansion is that negative keywords have become more important than ever: they're not a nice-to-have, they're what makes broad match remotely viable.
There are three match types and each behaves differently. Broad match is the default and the most permissive: your ad shows for any search Google considers thematically related to your keyword. Useful for exploration and discovery once you have sufficient negative keyword infrastructure in place, but dangerous on a new account with no negative keywords. Phrase match requires the core phrase to be present in the search query: "North Wales plumber" as a phrase match keyword will show for "emergency North Wales plumber" and "North Wales plumber near me" but not for "plumber training courses." Exact match is the most controlled: your ad shows only when the search closely matches your exact keyword. Actual exact match now includes some close variants and synonyms, but it's still significantly more precise than phrase or broad.
The fix: start new campaigns on phrase or exact match for your core keywords. Use broad match only in separate campaigns where you're specifically prospecting for new keyword ideas, with a thorough negative keyword list in place before you launch it.
2. Not setting ad schedules
Google defaults to showing your ads 24 hours a day, 7 days a week. For most service businesses, this doesn't make sense.
If your phone isn't answered outside business hours, if there's nobody to respond to an enquiry at 11pm or 6am, those clicks cost money but produce nothing. The searcher can't reach you, they can't get their question answered, and they move on to a competitor who is reachable. You've paid for a click that had no chance of converting.
Even for businesses that are reachable outside hours, conversion rates typically vary significantly by time of day. A solicitor's website might get enquiries at any hour, but contact form completions might cluster heavily between 9am and 6pm on weekdays. Running ads outside the conversion-heavy window dilutes budget.
The fix: pull your existing campaign performance data by hour and day of week (Campaigns > Insights & reports > When: Day/Hour of week) to see when conversions are actually happening. Set your campaign schedule to concentrate spend on those windows. For new campaigns without data, start with your business hours as a default, as this is almost always more efficient than running 24/7 on a limited budget.
3. Leaving Search Partners and the Display Network enabled
When you create a search campaign, Google defaults to enabling both "Search Partner websites" and the "Display Network." These are fundamentally different advertising environments from Google Search, and they convert at a fraction of the rate.
Search Partners are third-party websites that show Google search results, including sites like YouTube, Amazon, and various smaller search engines. The quality varies widely, and conversion rates are consistently lower than direct Google Search. More importantly, you cannot see performance by individual Search Partner website, as the data is aggregated, making optimisation difficult.
The Display Network means your ads can show as banner or text ads across Google's network of millions of websites, including blogs, news sites, and apps. This is completely different from search intent advertising. Someone reading a news article is not in the same mindset as someone actively searching for your service.
Including both networks in your search campaign means their typically lower conversion rates contaminate your data and inflate your overall CPA. You end up with an account that looks like it has consistent performance across the board, when in reality search is converting well and the other networks are pulling down the average. This is one of the most consistent findings when I audit accounts. It comes up in 8 Crucial Reasons Your Paid Ads Aren't Profitable alongside the other structural issues that accumulate quietly over time.
The fix: when creating a search campaign, expand the "Networks" section and uncheck "Search Partner websites" and "Display Network." Run search campaigns in isolation. If you want to test Search Partners or Display, do it in separate campaigns where you can measure their performance independently.
A word on ad scheduling that goes against common advice
Most guides tell beginners to gather data before restricting ad schedules. I disagree. If your phone isn't answered evenings and weekends and your daily budget is £30, running 24/7 from day one means a third of your budget could disappear between 9pm and 7am without a single call being answered. Start with your business hours. Loosen the schedule once you have data that justifies it, not before.
Three defaults worth fixing before you spend a penny
These three settings are where a significant proportion of beginner budget waste originates. They're enabled by default because they generate more spend, which is in Google's interest. They're not necessarily in yours. Beyond these defaults, another common beginner instinct is applying tight restrictions before the account has enough data to guide those decisions. Fixing all three before a campaign goes live, or as soon as you identify them in an existing campaign, is one of the highest-return uses of 30 minutes in Google Ads management. If you suspect there are other issues lurking in your account, getting a professional Google Ads audit will surface them.
Google Ads management in North Wales: if you'd like an audit to identify whether any of these issues are affecting your campaigns, get in touch.
