Most emulators for android work perfectly atleast if you have a regular bluetooth controller. On my Pico i cant map the motion controllers in android apps but the Xbox controller connects and works just fine.
good resource: https://emulation.gametechwiki.com/index.php/Emulators_on_Android
Theres also WinlatorXR for Windwos games. But its just too much of a hassle to setup everything for my taste. But it does work. I think just recently the fork Winlatorxr-Cmod got released which can be beneficial in certain aspects. But idk the XR2 Gen1 in my Pico4 is too slow either way for the interesting games to emulate.
You could also check out this channel: https://www.youtube.com/@virtuallyreal
A bit Pico centric but most stuff should be easily applicable on the quests with a few adjustments too.
I'm mostly using Ironfox and Fennec to have two seperate Firefox based browsers. One for watching videos while i browse on the other. Tubular for Youtube is also pretty good since the youtube webpage is soo fucking heavy that the fan gets annoyingly loud.
Duckstation with retroachievements for PS1 emulation is my jam when it comes to emulation. PPSSPP is also pretty sweet but it just doesnt scratch my itch like PS1 games do. idk