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 ...
The Droid Guy

How to Remove Xbox Completely from Windows 10 for Good

Removing the Xbox app from Windows 10 can be a bit tricky since it is integrated deeply into the operating system, but it is possible with the right steps. Here’s a detailed guide on how to remove ...
XDA Developers on MSN

Windows handheld gamers can unlock the new "Xbox mode" early: here's how

Microsoft's 25H2 update adds Xbox mode to focus Windows on gaming, freeing resources and launching titles in a single window.

We Tried the Xbox Full Screen Experience on the Original Ally X

The Xbox handheld will feature a new 'Full Screen Experience' mode, which I managed to get running on my original ROG Ally X.