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.
The club has fulfilled all of Ten Hag wishes to improve Manchester United performance, including bringing in new goalkeeper Onana. Manchester United performance is still below expectations even though they have brought in quality players in the transfer market, Ten Hag has not yet found the best strategy to restore Manchester United performance to the same as in the first season he set foot at Old Trafford. Three wins and four defeats is not a good achievement for Manchester United this season, the last defeat to Crystal Palace was very difficult for supporters to accept because it happened at their proud stadium.
Ten Hag credibility in managing Manchester United is starting to be doubted due to losing too easily to a team whose player quality is lower than the player material that Manchester United has. Ten Hag has to try a new formation with changes to several players who have been inconsistent in maintaining the game, he still has time to return Manchester United back to winning ways as long as he can make all Manchester United players integrate well while on the pitch.