If your camera won't work for Google Meet, try the following:
- press and hold the 'Windows' key (bottom left)
- tap 'x' to launch a menu (let go of the windows key now)
- click / tap on 'Device Manager''
- find 'imaging devices' in the list and expand it by clicking on the '>'
- single click on the camera entry (probably the only item in the list)
- now right click (or long tap) on the camera entry - a menu appears
- tap on 'Uninstall device' and then tap on 'Uninstall'
- restart tablet (start, restart - NOT hibernate)
Camera should work.....