People say you will have less problems with AMD but I am using a Nvidia GPU for years now (on Cachyos and Pop OS) without issues. I'm using Steam and Proton pretty much exclusively though.
Nvidia on desktop has been mostly fine, if not rock solid, on the happy path they provide.
But their happy path hasn't included proper wayland support for a long time.
Nvidia on laptops? Insert the famous Linus Torvalds meme here
Which card and which drivers? I switched from Windows 10 to Xubuntu last year and have had endless issues with my Nvidia card (GTX 970). At the moment, I can't even use the desktop without annoying flickering & hard to diagnose / fix bugs.
Its an old card so I have no idea why I'm still struggling to get it to work. Is it perhaps because I'm using Xfce? I heard that Nvidia cards play better with Wayland although I haven't tested this myself.