Calls/ FaceTime
Every time i call someone it rings on speaker and I can’t turn it off, when they answer we can’t hear each other. When I FaceTime someone we can’t hear each other and the call fails
Sounds like an issue with your mic and speakers.
See if https://support.apple.com/en-us/HT203792 and https://support.apple.com/en-us/HT203794 help.
If not, your phone will likely require service by Apple or an authorized service location.