Quick Answer: Most "broken" landing pages are getting junk traffic, not failing to convert real buyers. Before redesigning anything, open your search terms report and check what you're actually paying for. If the clicks are irrelevant, no amount of CRO will save you. Fix targeting first, then fix the page.
The trap almost everyone falls into
You launch a campaign. Clicks come in. CPC looks great. Then nothing happens.
So you blame the page. You swap the form. Nobody fills it out. You try a multi-step form. Nobody fills that out either. You rewrite the headline, move the button, add a video. Still nothing. One advertiser I found had spent $1,000 on ads and gotten exactly one form fill. He'd already rebuilt his form twice.
Here's the problem. You're guessing. You can't tell whether the page is broken or the traffic is broken, so you thrash on both and fix neither.
There's an order of operations for this. Follow it and you'll find the leak in an afternoon instead of a month.
Why cheap clicks are a warning sign
A low CPC feels like winning. It usually means the opposite.
Cheap clicks often come from broad targeting. Broad match keywords with no negative keywords will happily spend your budget on searches that have nothing to do with your offer. One trash valet service was getting clicks from people searching for the local garbage company. Those people landed on the page, realized it wasn't what they wanted, and left. The page never had a chance.
When irrelevant traffic hits a good page, the page looks broken. Every metric says so. Bounce rate is high. Form fills are near zero. Session recordings show people leaving in seconds. But the page isn't the problem. The auction is.
That's why you diagnose in order, traffic first, page second.
The diagnostic order
Step 1: Pull the search terms report
Go to your campaign, then Insights and Reports, then Search terms. This shows the actual queries that triggered your ads. Not your keywords. The real searches.
Read every term that got a click. Ask one question for each. Would this person buy what I sell? If more than a quarter of your spend went to irrelevant searches, stop. You found your leak. The page fixes can wait.
Step 2: Tighten match types and add negatives
If the search terms report is ugly, your match types are too loose. Broad match hands Smart Bidding a huge canvas, and without conversion data it paints garbage. Switch core keywords to phrase match or exact match until the account has enough conversions to guide the algorithm.
Then build a negative keyword list from the junk you found in Step 1. Add city names you don't serve, job seekers, DIY searches, competitor products you don't carry. Do this weekly. It compounds.
Step 3: Now look at the page, in this order
Only after the traffic is clean do page problems become visible. Work through these in sequence.
Form friction first. Every field you ask for cuts your form fills. If email is the first question and nobody answers it, ask for less. One field beats five.
Trust above the fold second. Reviews, credentials, before and after photos, a real phone number. If your audience skews older, a clickable phone number can outperform any form.
Mobile speed third. Run the page through PageSpeed Insights. A performance score in the 50s bleeds conversions before anyone reads a word. Background videos are the usual culprit. Cut them on mobile.
Message match fourth. The headline should repeat the promise of the ad that got clicked. If the ad says one thing and the page says another, people bounce, and your landing page experience score drags Quality Score down with it.
Step 4: Confirm your conversion tracking actually fires
Before you judge any of the above, make sure the conversion action itself works. Test your own form. Watch the conversion register in Google Ads. A surprising number of "landing page problems" are just conversion tracking that silently died. If the data going in is wrong, every decision downstream is wrong too.
What this order saves you from
The redesign spiral. Rebuilding a page to convert traffic that was never going to convert is expensive twice. You pay for the junk clicks and you pay for the redesign. Then you conclude Google Ads doesn't work for your business, when the real issue was ten bad search terms and a form with too many fields.
Diagnose in order. Traffic, targeting, page, tracking. One leak at a time.
If you want the upstream half of this handled from day one, Stop Flying Blind is my free course on picking buyer-language keywords, choosing the right match types, and setting up conversion signals so you can actually see what's working. It's free at freak.marketing/learn/courses/stop-flying-blind.
FAQ
How much traffic do I need before judging my landing page?
At least 100 relevant clicks, and relevant is the key word. If your search terms report shows junk, the click count means nothing. Clean the traffic first, then let 100 or more qualified clicks land before you conclude anything about the page.
Is a low CPC ever a good thing?
Sure, when the search terms behind it are relevant. Cheap and relevant is the goal. But if CPC dropped because broad match wandered into unrelated searches, you're paying less per click for clicks worth nothing. Check the search terms report before celebrating.
Should I use heatmaps and session recordings to diagnose this?
Later, not first. Tools like Hotjar and Clarity show you how visitors behave, but if the visitors are junk, the recordings just document junk behavior. They're useful in Step 3, once you know the traffic is real.
My search terms look fine but conversions are still zero. Now what?
Then it's the page or the tracking. Work Step 3 in order, form friction, trust, speed, message match. Then verify the conversion action fires with a test submission. If all of that checks out, the honest next question is whether the offer itself is something people want at your price.