If you have Quest/Quest 2 you can still play VR games on Linux using ALVR.
I did make it to work on my Arch desktop, but the experience is not great as you need a lot of tweaks not to mention better to have Wifi6 and very good GPU/CPU to handle game and high resolution video encoding on top of it as both game and video encoding will eat you FPS.
But once it get connected and works with SteamVR rest works mostly fine.
But it’s better to buy Index if you want to play VR games on linux.
I play BeatSaber and few more VR games using ALVR and it’s working great. (But I know that not all VR games fully work on Linux)
But you just need to know that its for Quest headsets running mostly over Wi-Fi (but you can also run over USB) so your milage may vary depending on your WiFi setup.
I use Arch btw 😅