

I think PopOS is a good option for gaming since ypu can get it with NVIDIA drivers included if you need them but I’d reccommend looking at Bazzite as well:
Generally I’d say: Be prepared to keep an open mind, while you can use Linux like any other OS in most cases nowadays don’t get stuck on wanting to have everything, every workflow exactly like it is on Windoge. Try new things, tinker, it’s fun!
Yeah for NVDIA you either wanna use a distro that bakes it in (Bazzite, PopOS) or hop over to tge command line and install the drivers there, e. g. Fedora:
https://rpmfusion.org/Howto/NVIDIA
No idea how GUIs are for this nowadays (Manjaro, Linix Mint, Ubuntu, back when I used those distros it wasn’t working too well most of the time).