I honestly think mobile ads in free games and other apps are some of the lowest quality piles of garbage I’ve ever had the misfortune to see, and they are constant. How did we get to this point? Where they are so horribly unbearable and yet so commonplace?
Try AdGuard DNS, it’s free and only takes a few minutes to set up, no account needed - you just modify your phone’s DNS settings (there’s also an app instead). Sometimes it doesn’t block everything, like any DNS blocker including Blockada, but gets most things.
And they even have DNS profiles for most devices. I’ve been running some form of AdGuard for nearly a decade. On the rare occasion I do see an ad, it’s quite surprising.