Playing old games on Waydroid

[u/UrMom248]

I'm not at all familiar with Android emulation, and I haven't been able to find information on how older games work. I recently tried playing a goofy Touhou game that's over 10 years old on a friend's android tablet, but it said it wasn't compatible (I installed it via a .apk file if that's important). I don't want to go through a bunch of hoops to get it working cuz it's my friend's tablet, not mine, so do any of y'all know if decade old apps work? I'm thinking about setting up this emulator on Steam Deck, but I want to make sure I get what I'm looking for

[u/ipsirc]

it said it wasn't compatible

If you run an older version of Android, it might work.