Video settings lost in forced uninstall-reinstall

I was recently forced to upgrade version before I could access the zoom app.  Unfortunately, I received the message that I could only upgrade with IT assistance. (I am a sole user with no IT department), so I needed to completely uninstall and reinstall the zoom app.

Unfortunately this lost some personalised video settings.  My camera now has a different field of view and it seems to have more trouble identifying hand gestures when operating a background.  (I have no green screen)

Are my old video settings stored anywhere?  Is there an advanced processing setting which might improve my camera performance with backgrounds - as I vaguely recall I may have found the solution there previously.

Thanks

Rod