There are a ton of good mobile games but the reason you can't find them is because 99% of what you see in app stores are paid advertisements. Every section is basically paid, and the few which aren't get botted by major companies. That app that has 5 million downloads and 4.6 average score? Most likely spammed with bots that give it 5 stars. Google Play is a disaster.

Here are some Android games I would absolutely recommend:

• Fancy Pants Adventures

• Data Wing

• The Battle of Politopia

• Sonny

• Plato

• Cube Escape Collection

• Pocket City (or its sequel)

• Bloons TD 6 (paid)

• Dicey Dungeons (paid)

• Dead Cells (paid)

• Downwell (paid)

• Baba Is You (paid)

• Levelhead (paid)

• Kingdom Rush series (paid, usually on sale though)

• If you own Netflix you get to play their catalogue of games for free. I recommend Into the Breach, Shovel Knight Pocket Dungeon, Oxenfree

I could go on, but the point is ignore everything you see on the store. The store is garbage. Try to look for games that are well-talked about online.

Edit: Forgot to mention, there's an app called MiniReview where you can browse game reviews from people who actually care. It's a good resource if you're looking for good games.