The 2 against Southampton could both have been given by the ref and VAR would not have overturned either of them or advised the ref to review again for himself.
To miss out on one of the other was very unlucky. United would have been given both.
Probably a handball in that game also we should have got, as the defenders arm was away from his body for the diving block.
What is annoying me is that things do not seem to be getting reviewed for us, if it's reviewed and they decide no pen, fair enough, but if we commit an alleged foul the game stops 2 minutes for a review, if the opponent does, the game just seems to carry on and we have no info on a review, that's what Klopp asked the 4th official about the other day whether we were stopping for a review.