Any prospect of an iOS app?

Have you tried the Firefox flatpak for watching YouTube? I understand the hardware acceleration works better on that.

I basically never have any Gnome crashes on Fedora so you probably want to consider whether you’ve made any strange changes / unusual extensions etc. admittedly not on a framework so I hope that’s not the issue.

I’d strongly advise full hard drive encryption though, which will require a full reinstall. (It can be done after the fact I think but the installer gives you the option so might as well go with that - especially if that’ll iron out any issues you’re having).