Despite enjoying the lion's share of possession, Pep Guardiola's side rarely tested David De Gea in the United goal, with Anthony Martial's first half strike and Scott McTominay's goal in the final minute consigning us to a seventh league defeat of the campaign.
“We didn't start badly and were playing quite well until we conceded," said Bernardo afterwards.
“We know how good the Manchester United players are on the counter-attack, very aggressive. We will have to watch the game back and listen to what Pep has to say.
“Now it's too close to know what was lacking. But a team like ours cannot lose as many games as we have lost so far this season.
“We need to check what's not going right and try not to make so many mistakes."