I have (2) Samsung S23s.  1 is fine- the other the sound for notifications is so low you would have to hold it to your ear to ever hear it.   The volume is as high as it gets.  The ring tone is set to loud.  All other media is fine.  I even did a factory reset and it's the same issue.  Getting frustrated and missing important notifications.  Wishing I had not upgraded.  Any fixes?