The double dribble, I would guess the referee might have thought the defender bumped the ball. Still a bad no call, but I can see why it might’ve happened.
The foul on the final Virginia shot attempt is just bad. The final Auburn shot attempt had just as much contact and there was no call. Not to mention, at the end of any close game, referees swallow their whistles and allow much more contact than what was called there. Technically, Auburn did foul Virginia, but if they are going to call that then they should have made the same call at the other end.