Why do you only look at the Manchester United team in the last 2 matches between these two teams, in fact we have a different possibility as to why Manchester United could lose even though in the match a few days earlier against Crystal Palace they could also win, I think it's because the Crystal Palace team play with different strengths.
Ten Hag cannot be completely blamed because the Manchester United team's situation is very bad right now, Ten Hag doesn't have many choices because many Man United players are injured.
They got different results though their opponents were the same team. Those matches have just occurred, so I think it portrays their current performance and it is the easiest assessment material that Ten Hag can use to carry out evaluations. Losing is the responsibility of the entire team but so as not to repeat the same mistakes and lose again, the coach must make a change and have the courage to get rid of players who are hampering the rhythm of the game.