New to Linux—Epic Games compatibility? (Plus more)

I'm thinking of installing Linux (think I'm going to use Nobara) on my new budget gaming PC, and my biggest worry is video games compatibility. I have most of my games on Steam and Epic. Some on GOG, and some on Itch. I know a bit about steam compatibility, but not much about the rest. Is this something I need to worry about, or should it just work?

Edit: for anyone that finds this, sounds like the Heroic Launcher is the way to go. Thanks everyone!

Edit 2: I've used Heroic Launcher and Steam + Proton for a few days now, works great! I'd recommend it to anyone with a similar question.