You can install the new Xbox Full screen experience mode for Windows on handhelds but whether it will work is another question entirely

Microsoft's "Full screen experience" mode for handheld gaming PCs shouldn't officially be usable yet, but it turns out you ...

You can now turn any PC gaming handheld into an Xbox Ally

If you can't wait for the release of the Xbox Ally and Xbox Ally X next month, it turns out that you can get the full Xbox ...
GIGAZINE

I tried using 'Starlight Resize' which allows you to enjoy the PC version of Dereste in a pseudo 4K full screen

GitHub --rinsuki / StarlightResize: The guy who nicely resizes the DMM version of Dereste's window and makes it pseudo full screen By default, the PC version of Dereste only supports windows up to a ...