As others have said, I though David Coote had a good game. Perhaps not the most challenging, but he did everything correctly.
He doesnt appear to be the most confident, and I just think he had the confidence to give the penalty on a close call, but as soon as the VAR told him to check the decision, I think he probably knew before he for there he was going to overturn it.
After that he lost total confidence for the next 5-10 mins (which included utd correct pen - though not sure he had the view to give it, but could have been pulled back for a foul)