After Paul Pogba's storming performance against Leicester City last week, he was anonymous at times at the Amex - although he did convert a consolation penalty deep into injury time.
Romelu Lukaku briefly brought United back into the game at 2-1. "We made mistakes and were punished by our mistakes. You always try to play better than the last game, but we know, and I know we can always play very good, but the attitude has to be good and we missed that today".
Lukaku made no mistake with his second chance, after fluffing an early opportunity, but just when United was expected to force its way back into the game, more poor defending cost the visitors again. Sometimes you make mistakes and are punished, sometimes the opponent doesn't take advantage of the gifts, and sometimes they do and this time was nearly three on three so they were critical in the gifts that we gave them and because of that I think they deserve [to win].
'When you're 3-1 down, your first thought then is, "we've got to score goals, we have to score goals".
Eric Bailly and Victor Lindelof were both given the run-around by Glenn Murray and Pascal Gross, while Ashley Young was exposed far too easily and there was little in the way of protection from the centre of midfield, with Fred twice dispossessed in tight spots leading up to Brighton goals. "There are basic mistakes that makes nearly an impossible mission to win the match".
The key points from Brighton boss Chris Hughton's post-match Manchester United press conference
"I don't want to go in that direction". But don't expect me to speak with you about it because you and your colleagues were really critical of me when in previous seasons I was probably too honest and too open in my analysing and I was too honest and too open in analysing about players' performances.
"I will be very happy to analyse my players' performances when they were very good".
A surly Mourinho spent the buildup to this clash choosing to criticise rivals Manchester City's fly-on-the-wall documentary released this week, saying "you can't buy class" in reaction to the behind-the-scenes account of last season at the Etihad Stadium.
Towards the end of the game, United were reduced to hitting long balls forward to Lukaku and substitute Marouanne Fellaini, with minimum effect bar a 75th minute Pogba shot that was saved by Ryan.
"We lost, we did not deserve to win", the Manchester United captain told Sky Sports after the defeat. I can say a lot of things. When I can not do that, don't push me to the other side because I will not go to the other side. I tried to help the team as much as possible.More news: Trump cancels $92M parade, cites cost, says maybe next year
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