This truly sounds like like a configuration issue, possibly in the settings → display panel.
One monitor may be disabled there. If so then enable it.
The monitor that is configured as primary also may be the issue.
For many (most?) laptops the default config uses the iGPU to drive the built-in screen and the dGPU to drive the external monitor. You seem to be having issues with not having the 2 displays operating properly.
Have you tried using X11 instead of Wayland?
Have you tried the config shown at How to Set Nvidia as Primary GPU on Optimus-based Laptops :: Fedora Docs ? That config seems to enable the dGPU to manage both screens as well as providing the ability to have hardware acceleration active for graphics.
That seems to help for many, but does require using X11 for the DE to be fully functional.