I tested games like Beat Saber on the very same computer and software, but it doesn't launch.

When the game opens, it displays a full screen window with the initial menu, but when in VR mode, this menu is only visible on the screen, not in the Oculus Quest 2. What you see in the Oculus Quest 2 is the loading scene of steam. When you open the Steam menu on VR, the game is shown as launched, but nothing else happens.