The front Camera on S20 FE 5G has got issues.. the video call is blurry with no clarity when compared to the rear camera while on a video call on any of the apps like whatsapp, facebook messenger, google duo etc. it doesn't even have options to select the aspect ratio during a video call.
First timer switching from Apple to Samsung 😞😞 nightmare transition with problems popping out just few days after out of the box .
Sounds like an issue with your device as others dont experience this. I would indeed call it a nightmare transition. Best option is to go back with the phone to the seller. You paid for it they should solve it.