7 plus can’t make calls

My iPhone 7 Plus can’t make calls, can’t activate the microphone, and even on Bluetooth devices can’t activate the microphone. The speaker option during calls is grayed out, and any time I try to use any software where the phone needs to listen it doesn’t work.

When I say “activate the microphone” I mean that the phone is not able to hear anything. As an example, if I tap the keyboard’s microphone button to use speech-to-text it does not even start listening with or without a Bluetooth device connected. Videos I record have no audio at all. I have tried all the apple support suggestions (settings reset, iPhone restore, restore from backup, go to an apple store to have it diagnosed) and none of these suggestions have worked. What am I supposed to do?