From my experience, I can install several repack without any issues on my Mint install (using wine). If you overwhelmed, the easiest way is to add the .exe of your game as non-steam game through the steam and the proton will handle the rest assuming you won’t find dependency issues, if you stumble across problem try to search protondb for solution.

Personally I run my games with wine because I couldn’t figure out how to make use of bottles and lutris (ye I’m weird).

EDIT: Also you can run your modded games on Linux, so far I have tried modded nfs mw (2005) with hard+, underground2, and new vegas, they are works like on Windows.

If shit happen, rtfm. gl op on your journey!

They don’t want to miss out the “hype” but also Valve deem the hardware jump is not that much to consider “Deck 2”. If only these manufacturer also consider bringing software optimization rather than keep producing portable handheld with small performance jump.