Quest 3 (until the Frame comes out and I can get the fuck out of Meta's garbage).
There's a Linux VR Discord that's super helpful of you're in that ecosystem, but basically look into WiVRn and ALVR projects, install, and play with configs. It's easier to do than it looks but depends on your distro, video card etc.
On my system both ALVR then WiVRn installs were as simple as installing the packages and running them. Some games complained with WiVRn but all I had to do was add a string to the launch options in Steam that was provided by the launcher for just such a case.
Linux VR has come a long way for sure! Feel free to hit me up if you have more questions, or hell I'm happy to help in VR Chat/Resonite too if you just wanna chat about the tech lol, I'm one of the weirdos that still thinks this stuff is cool even if it's never going to be mainstream the way corps keep trying to monitize it.
Edit: links help 🙄 https://discord.gg/QxrS6dcaa