Maybe a stupid idea, but try manually selecting the SSD in boot menu. I don’t trust UEFI/BIOS to do what it’s supposed to after finding out that HP UEFI simply wipes all boot entries after booting an external drive.
I tried switching to the Nvidia drivers but all I got was a black screen.
That does sound familiar from when I used GeForce 8600M GT laptop. Nouveau mostly worked, but the official NVidia driver did this. What worked was switching to an old kernel, Linux 5.4 on that thing. But I don’t like this “solution”.
Don’t worry, it’s probably going to be even more locked down.
I miss Android 7 and prior. The only improvement I see is permission management and UI on tablets (dp >= 600). And perhaps app updates without prompting user from 3rd party app stores (like F-Droid), but I don’t like automatic updates anyway.