Can't seem to get anything I have downloaded to actually launch at all or open without crashing

(Let me edit here by saying i've downloaded a bunch of custom rooms and different APKs to ensure it wasn't just that 1 or 2 individual games that was the issue)

The sidequest app/browser within the quest 2 works fine to view the store etc. but if I install an app like the simpsons custom room it wont let me open it at all but it will install fine and when I install the same on the PC app and install a custom APK game the game will show up and let me launch it however 5 seconds later it will crash back to the unknown sources menu

I have tried a full factory reset/ switching developer mode on and off a couple times, re adding my device within the pc and phone app, re signing into meta too but can't seem to find a solution to where I went wrong and can't seem to find a similar issue online