If you play "free" games on your phone, I recommend installing #AdGuard to block ads and trackers. And if you have the technical know-how, switch your DNS provider to #Quad9 within the #AdGuard app and on your router, which will help you block even more of them.
Currently checking some statistics on 6 different home networks I maintain. Basically every time a "free" mobile game is started, the blocked ad/tracker statistics skyrocket.