I think when was without Maguire playing in the club, Man United's defender performance will be much better. but in reality, it's not much different, they still don't have a good performance at the back line. Especially when Maguire is around, this was serious and cannot be helped.
In fact, their problems, especially in the back line, are really complex. It seems like the lack of high motivation for them makes them more solid in defending their back line. So this will be very difficult for the goalkeeper to optimize his abilities.
Man United was very grateful to win 0 - 1 against Burnley, because throughout the match, Man United seemed overwhelmed by the play of the Burnley players. Luckily, Burnley players are also not a club that has a sharp and accurate attack line, so their front line performance can still be beaten by Man United. This match is quite interesting because it makes Man United fans anxious when they see how their idol competes against this middle-class club. But at least, they have won this time and congratulations on that. In the future, there will be many big clubs to face and some medium clubs which can also be very troublesome. So, Man United really needs to always improve their consistency to continue playing much better. I'm curious about how Ten Hag will make Man United much better in the future, because if he continues to fail, then his position will also be threatened.
Though United won the game their performance was really poor and at a point in the 2nd half Burnley dominated the game with a 90% ball possession while United had just 10 this is one of their poorest performance so far, Burnley deserved to win the game, they were so impressive but lacked a good finisher to help the convert the good chances they had.