Personally I don't like Manchester United's performance. They won though. But their performance was not satisfactory. I was not happy with their performance as they could not dominate even against a weaker team.
As they will play against Barcelona in the next match, it will be very difficult for them to win this match. If United could dominate every game in the group stage, I'd say they'd be able to beat Barcelona too. Besides, Manchester United's performance in the Premier League is not good. United is quite weak compared to Barcelona. And so I don't think United will be able to win against Barcelona.
Manchester United is surely struggling with on and off the field issues specially now situation is not clear after Cristiano Ronaldo statement but most chances they will settle and having improved performance after this break because now Ten Haq is doing amazing job, and he can handle this all in positive way which is surely going to be new era for the Manchester United after Sir Alex Ferguson which done historic job here.
Now for the match between Barcelona vs Manchester United here we have few things which are surely needed to be done like Barcelona is doing good job in La Liga, and they want to be retained their top spot which need better concentration from them and their exit from Champions League is surely big setback, but now they are trying to recover this with the win of La Liga title in 2023 and Xavi is also working on adjustment which keeps them better in La Liga instead of Europa.