Dungeon Maker is a fun little roguelike/strategy game I’ve been playing atm https://play.google.com/store/apps/details?id=com.GameCoaster.DungeonMaker&hl=en&gl=US You hire and level monsters whilst building a sorta dungeon with traps for heroes.
Since you mentioned Minecraft and farming simulator, both Terraria and Stardew Valley are on android, though I can’t speak for their quality or playability.
Emulators are a pretty good shout, PPSSPP was pretty great when I last used it which was a few years ago now, so I imagine possibly better now and the PSP had a decent selection of games.
You could also try Google Play Pass for a month and look at a few paid games and see if anything tickles your fancy there, but subscription service.
It was a fun experience trying to get to all work. I did originally try on my raspberrypi but I ended up just giving up on that due to the issues you mentioned. But it’s nice to have my own instance, and slowly populating the all feed with new subscriptions and well I owned the domain va11halla.bar I had to use it for my name.