Settings to disable video/webcam/camera?

(Mobile user here) I think it would be extremely convenient for many users and I, if we were able to optionally disable video/camera for ourselves. When I'm in a group chat I sometimes accidentally press facecam and it's extremely uncomfortable. I think it would just be a nice small option for us to be able to disable being able to use the camera in the voice and video settings! (Also I dont know which topic to put it in, since mobile and voice and video are separate, so I went with voice and video)