I saw a lot of improvements in Manchester United's game against Chelsea yesterday, and they even created a lot of chances against Chelsea but failed to convert those chances into a goal. What I observed from Manchester United's game against Chelsea yesterday was that their midfielder and attack were weak; if not, they would have beat Chelsea yesterday at Old Trafford. If they can work on that in their upcoming matches in all competitions, they will surely get positive results that will allow them to achieve great things this season. If Manchester United can play better under the watch of Ruud Van Nisterlrooy, I believe they will do well when the new coach takes over from him. Ruben Amorim changed Sporting Lisbon and won the Portugal League title twice with Sporting Lisbon, so don't worry what Ruben Amorim will do at Manchester United because he has the tactics that can help Manchester United play better under him.
IMO, the problem is that United players are unable to convert their chances into goals. If I look at their data from match to match, they always have several chances according to statistics. However, the problem is that Man United players are not productive. I don't know what their problem is, looking at several of their matches, their pure strikers have a hard time scoring goals. Luckily in last night's match Man United drew, at least, under Nistelrooy's guidance they did not experience defeat. As you said, their midfielders are weak and Ugarte is the least performing. Likewise with the two wingers, they are not maximal referring to statistics. no exception for their single striker, Hojlund was also unable to sharpen his abilities. It seems that Manchester United needs an overhaul. In the Chelsea camp, they performed quite optimally even though several players are often unstable in several of their matches. So far, Maresca has brought a little change to the Blues squad, and of course that makes Chelsea supporters happy. By the way, I'm curious about how Man United will be under Amorim's guidance later.