For some reason, Man United's performance in cups other than the Premier League is usually quite good, even the motivation and strength of their squads are very large in the cup. Like last season, Man United won the FA Cup. But in the EPL?
Well, that's the problem we often see with Man Utd. Last season we also saw that Man Utd was really bad in the UCL and they were also bad in the Premier League. But yes, it's true that they are very good in other domestic leagues, such as in the FA Cup, they even beat Man City. I think this is related to the mentality of this squad which is not able to compete under higher pressure in more famous competitions.
Indeed, their mentality doesn't seem that good for a higher level match or competition, especially UCL. Well, let's just focus on the EPL, Man United's performance is very inconsistent. Indeed, sometimes they are quite good when playing against top clubs, but often they become very bad when playing against middle-lower teams.
Oh yeah, today there is also an EFL match, several top clubs competed and the results were as expected. Most of them won the matches.

Goolge/EFL
In this match, Man United and Chelsea were even able to humiliate their opponents with great skill. However, let's look at their performance in the EPL, unfortunately, it is often not that good.