If your only pet peeve about the S10 or S10+is that your selfie camera is too zoomed in then these steps will fix it for you! A person's advice fixed mine so sharing with community!
Click your emoji on top left
Then the settings wheel on top right
Scroll to very bottom
Click clear lens cache
And as they said Boom fixed! Since I couldn't comment thanks! Thank you Boom! @useraGysRq7w81