Is there any way to enable Google Chrome/Meet to use a microphone but not a camera? I'm not a Chrome user, but have to use it for some online training where I need to hear/speak but not use the camera
This is a generic solution that will apply to even non Google apps:
Remove all mic/camera permission in Chrome for that site, then do a call that requires only microphone and grant that access alone. After that make a video call and when it asks for video permission, deny that.
If you did a video call initially, it grouped microphone and camera in a single permission item... which you can't break apart later.
However, that seems to have stopped working well this morning for me as Google Meet now continually harasses you to allow camera as well.