Is it just me I have the S21 ultra but after I got the android 12 and one UI 4 update my camera pictures just seems dark and dim now before it wasn't like that and now on the lock screen only Samsung music app work poor decision.
have you tried it in safe mode for camera?
have you checked the lock screen settings for music widget issue?
submit an error report if you think it's a software issue after the update
Samsung Members app > + Button > Error report