Firefox won't access my webcam in Google Meet; will access it for other sites
It seems that Google Meet is choosing camera using it's own form, unlike the other websites (i.e. mentioned onlinemictest.com).
To access this form from the lobby:

click on the &quot;three dots button&quot; (⋮)
choose &quot;Settings&quot;
select &quot;Video&quot; tab
you should be able to select different WebCam, i.e. your Logitech USB WebCam