Oculus Quest 2 with MSFS2020

Alright then you need it installed. No OpenXR installed is why you cannot switch to VR.
Do you have OpenXR installed?
If no, install it from the Windows Store.
Done. Open XR installed.

Do you have the Oculus software installed?
On my headeset? Yes, and works good.

If no, install it and run it. Then opt-in for Beta in the settings. It will install everything and the values will appear.
If yes, opt-out of beta/opt back in for beta.
Confirm where to have it/placed/installed…

Once you have the values, you can make the change in order to use SteamVR for Virtual Desktop.

 ok.

But to be honest you should play MSFS with the Link and use the Oculus runtime. I did try playing via SteamVR runtime (not even wirelessly) and it was a stutter fest with almost 10FPS less than with Oculus.
I currently run between 180-217 fps in my games so I’m really hoping it doesn’t kill it too much. So do you really think buying the link cable is better? I’ve been doing lots of reading and get mixed measages about both.