I use steam with Monado to play VRChat on Linux, it surprisingly just works. There are many options to do this nowadays like wired PCVR headsets (The HTC ones are really well supported under Linux) or ALVR if you have a Quest. The only tricky part is setting up steam to use Monado instead of Steam VR but there is documentation on that. I even had some success with running Beat Saber under FreeBSD once using Monado and Wine.

=> https://monado.freedesktop.org/