Dropping by to throw some more praise onto the pile for Nobara Linux - it’s my current distro and I have an AMD RX 6700 as well. All the games in my Steam library work great, including Baldur’s Gate 3 (no tweaks necessary other than enabling the latest GE-Proton version). Unfortunately I haven’t played any of the games you listed; my preferences lean mostly towards RPGs like Elden Ring, Path of Exile, Guild Wars 2, Valheim (with mods!), Enderal and so on.
It is also helpful to know that if you make any mistakes in you character build, you can respec your class and ability scores very early in the game for a fairly low price. The things that you cannot change are your origin, race or appearance, but these don’t have such a great impact (unless you take the Dark Urge origin and find a bit too bloody for your tastes - in which case you have to start over)
Personally, I never played DND but I did play a bunch of RPGs before (such as the Pathfinder games on PC) and I love checking out character build guides. The learning curve of BG3 was pretty smooth for me.