Have you been able to check in your battery stats section in your phones device care / device maintenance section @Zy to see if something is highlighted.
A good tool to see if a downloaded app is causing this is to put the phone in Safe Mode which disables your downloaded apps and leaves the stock ones working and then see how your battery behaves.
Location based apps etc can use more juice and its possible one or more of your apps are not going to sleep / dormant when not in use.
A Samsung Experience Store or Samsung Service Centre can run a diagnostic test on the phone for you too.
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb 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. "
