How do I change my microphone?

Every time I connect my headphones via Bluetooth, my microphone input changes. The microphone on the headphones is horrible.

Is there a way to use BTT so that when I connect my headphones via Bluetooth, they automatically switch to the MacBook's microphone?

At the moment, BTT can detect if Bluetooth device connected, but you will have to use 3rd party app or eventually apple script to automate this:


that's it, but I know what I need to do to set the macbook microphone, do you have any step by step?