I don’t understand the question. You want stats in GB when you ride a bike although your wife is wearing the watch? That’s an obvious no. If it’s a typo and you want stats when your wife is riding a bike, then the answer is, it depends on the watch. My Amazfit Bip can track bike workouts so GB can as well.

I think the nobara updater works with yum. You should be able to access to the yum update history and find out what audio related packages got installed in the update and downgrade those. Anything with pipewire or alsa in the package name for example

Kernel 6.11 has been super buggy for me. About 3 weeks ago Nobara rolled out that kernel if I’m not mistaken. Do you still have a 6.10 grub option to try out? Since the live usb works that could be the issue.

If all your boot entries are 6.11, boot into the oldest and downgrade that

You could use ProjectLibre although it might be overkill

How would BangleJs be worse in terms of privacy? You can run both with gadgetbridge, so no cloud data necessary.