If this was happening to my phone and it wasn't a downloaded app causing this which can be diagnosed by putting the phone in Safe Mode then I'd first try a soft reboot by turning the phone Off and On and if no joy back up and factory reset.
A Samsung Experience Store or Samsung Service Centre can run a diagnostic test on the phone too @Neil10
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "