Are you using a usb c to lighting cable? This happened to me and I could only use a ucbc to lighting cable to charge the phone

I’ve found that when the speaker holes get filled up with crud, it can cause the speakers to sound like they are blown. Have you checked your speaker holes are clear?

Nope, your camera module is now “buggered” and will need to be looked at. Whether you get apple to do it or a 3rd party that’s up to you. Just note if apple finds signs of water damage they will most probably quote for full device replacement other than just the camera (around £500 for the 13). Also, another note, apple charges around £200 for a camera unit replacement alone, be ready for that.

If you go through the 3rd party option, it will be incredibly cheaper you would just have it live with an “unknown part” Message that will forever live in your settings. Up to you

Reset the phone and don’t restore from a backup