The most straightforward way merchants check their ads is by visually checking. This is something you should never do.
First and foremost, searching your ads leads to lower ranking and higher CPC. And here is why, every time you search your ads it generates an impression. Whenever an impression is triggered, and the ad is not clicked on, it leads to a lower CTR (Click Through Rate). In Google Ads, the ranking is partly defined by CTR, meaning that a lower CTR will lower your ad rank and increases your CPC costs.
Some merchants may also want to click on the ad, followed by a website exit. This causes a high bounce rate which will harm the ad rank.
Thus sabotaging your own advertising efforts.
I know everyone wants to see their ads, instead use this excellent SEA Testing Tool., it puts you in preview mode and thus does not trigger impressions. For more advanced data, use dimensions or reports. All of these tools will give you all the information you need and are accurate. It is allowing you to make decisions based on educated data.
The second issue with searching for your products is that the results are inaccurate. Google considers the browser’s historical and projected search data if you are logged in using your email data, location, ad performance, etc. There are over 200 data points Google uses to place an ad in the ad auction. Essentially each user will see a different result. Alongside historical data, it also takes into consideration what you are clicking on. If you click on many competitors, your ads will show less or not at all compared to competitors.
Clicks are influenced if you search for competitors. Future ad auctions will most likely favor competitors over your ads.
Essentially creating biased information.
Create useful report in Google Ads, these can be emailed to you weekly.