Not sure what you have, what your trying to do, and am pretty new to Linux myself, but I’m running KDE neon with a 3070, and after a little work to get drivers updated I’ve had minimal issues!
I’m not doing anything too crazy though, mostly web browsing and gaming is all.
You can also use Steam itself to run external launchers via proton! Might not be the best way, but it was super easy for a noob like me to figure out.
Let’s me play ffxiv (non steam) and bnet games quite easily!