Admob and stats display?

Question

Android

Good afternoon. For more than a month now, I have been worried about one simple question: what kind of nonsense is going on in my Admob statistics? (more details on screenshots). It seems that there was a click, it can be seen in the statistics and the cost per thousand impressions changed that day, but in reality there is nothing. And okay, if it were 2-3 times, but this happens almost every week. Does Admob invalidate a click? And could it be a problem that my apps/games don't have google analytics installed?
Thank you in advance for your response :)