Managing players who have a high level of egoism is very difficult, especially if the coach does not have a brilliant career to gain a lot of respect. Ten Hag came to the Premier League with his team's good performance in the Eredivisie, but he has not completely failed in managing the team because in his first season he was able to bring Manchester United qualified to the Champions League.
Ten Hag must win the dressing room because everything starts from there. Some of Manchester United's senior players look selfish in the game and actually this should be resolved rather than bringing in lots of new players. I agree that there are certainly some players who come and go, but improving the performance of existing players must be the focus at this time.
Manchester united is in its transforming stage, it will take time before they will bounce back to winning ways because there's a whole of things to set by the coach and the players will have to abide by strict rules set. Erik Ten Hag have his own ego to float, we know him to be one of the tough coaches that have managed Manchester United and he's not going to relent when it comes to his duties as headcoach. He discipline his players accordingly and he share the exact same respect and commitment to all of them despite the high status of some players.