I am using Microsoft Teams all day every day it seems at the moment, I have listed a couple of easy, quick keyboard shortcuts, which if you master these you don’t have that look of panic when you are asked a question and you scramble with the mouse or trackpad to come off of mute.
For Windows
Ctrl Shift B - Leave Call
Ctrl Shift M - Mute/Unmute
Ctrl Shift O - Camera On/Off
Ctrl Shift E - Share Content on screen
Very Similar for the Mac
Command Shift B - Leave Call
Command Shift M - Mute/Unmute
Command Shift O - Camera On/Off
Command Shift E - Share Content on screen
I hope you find these useful.