I don't think that it's because Manchester United was a big team that was why he was not able to deliver the truth is that any player coming to Manchester United will not play at his best because the environment in united is not a good one that players can do well
Yes, Manchester United's team atmosphere is not very good now. I haven't even seen them in a very good position (although they may have been in a good position in history). Manchester United's big problem is match planning and the players not being able to play their game. I still don't have a specific answer as to why they can't play well. But when I see a good player going to Manchester United and not being able to play well, it seems suspicious to me. It is not necessary to be world class to play well, but rather to be world class you need to play well. So before being world class, a player has to play well, but this is missing from them.
Manchester United’s problem is not from the players, but from the coaching. I feel like Manchester United will have to get someone who is capable of changing the narrative of this team. We all know the history of Manchester United and the record they have in English football history, because they are one of the most successful teams.
A simple example is when Amorim was coaching Manchester United, we all saw the achievements he made. Even though they were not able to get the Europa League trophy, at least they made it to the final. So, if they can get someone who will take them to the next level, I believe Manchester United will do better, because their players can do better.