I’ve found Routines to be one of the most important features with Samsung - set up a car mode to auto run when charging AND connected by bluetooth to a specific device …and have it set the brighness dependant on the time of day. Turn location off completely unless certain apps are opened. Protect your battery if charging overnight …but go into power saving mode should charging stop for some reason. I find it invaluable. Even more powerful when used with Routines+ add-on
Looks OP has solutions but it looks like Routines also has options to separate sound on app specific basis
For images, on Android you could use Imagepipe.
Once you’ve set it up, simply “share” the image to Imagepipe, it does its thing then automatically passes it on to whatever app you want - for example a messaging app for you to send on to others (it stores a copy of the image minus its metadata in an Imagepipe folder in your gallery for ease of access should you need it again).
For video, from memory I think mp3tag for Windows/Mac can remove metadata from some video formats