I won't criticize him harshly for the defeat against Bayern Munich though. Because it was already a very difficult game for them on paper. I was even expecting a really comfortable win for Bayern Munich. But despite their scoring 4 goals the Red Devils still answered with 3 goals.
The most important thing to think about is their performance in the EPL, of course looking at the current results fans won't like it. Ten Hag will have to find a way quickly to get their team up. I'm sure it can be done, looking at last season's experience which I don't think is much different from Man United's current situation.
I think Manchester United's biggest problem is their defence . And because of bad defense, the team lost points in most of the matches. Their attack is not too strong but good enough. But their defense is very weak.
Manchester United have conceded 14 goals in their last 5 matches . This is too much. We don't expect such poor defense from a top tier team like manchester united. If Ten Hag can only strengthen the defence, I think the whole scenario of Manchester United's performance will change. But so far United's defense has failed to strengthen Ten hag. ten Hag should have added experienced defenders to the squad this season.