The team did well in the last year, despite the fact that they moved to 4th place in the standings at the last moment, I think this is a good result. So what is happening to the team now I think it is clearly not because of the coach, there are problems in the team that do not depend on Ten Hag, as a coach he fulfils his function, there is no need to change him. Although lately I don't agree with his policy at all...
Manchester United didn't do well in the beginning of the season last year and they are doing the same this season. In the last two games they lost unexpectedly vs Crystal Palace in EPL and Galatasaray in Champions League. Defensive errors are unforgivable in such highly intense competitions and injuries couldn't be an excuse there.
Their next two games aren't that hard before returning again in Champions League and facing just next Manchester City. I am not very optimistic about them in Champions League nor vs City.
Right now Manchester United team is in a very poor condition because of their inability to win matches shouldn't be much difficult for them but at the end they lose matches shamefully. Manchester United started off last season very bad but then it was understandable because their coach was trying to understand his players and the team very well but by now the team ought not to be struggling in winning matches under a manager that took them to third position in the league last season. I think the last two matches that Manchester United has lost was an error from Erik Ten hag because looking at the Palace game in the EFL cup Manchester United dominated the game and won 3:0, now playing the same team in the league what stops him from using the same players ? United lost against Galatasaray at old Trafford again with a very poor performance that shows how confused the coach has become and how the team is not playing with confidence anymore.