I don't know what kind of chemistry can emerge between Ten Hag and the players if all we've seen is conflict and degradation of even good players. Even those with whom Ten Hag had an excellent relationship deteriorated, suppose in the case of Casemiro this can be attributed to age-related changes, in the case of Rashford it is difficult to come up with any excuses.
As for competition from other clubs, this is a general problem of the Premier League - there are too many strong clubs and even if you are good, you may end up a loser at the end of the season.
Good teams will bring home favorable results and they won't be pressing in for anymore results. Elite clubs will never stop doing their best but achieving great results this season. They will continue to strive harder because they believe there's something for them, more like winning and lifting titles. The English Premier League comes with huge surprise, everyone knows how to handled their top duty.
The losing end doesn't belong to club that are serious and keen on winning matches with ease efforts. Manchester United have been up and running this season, they're allocated to be in impressive form. Manchester United coach, Erik Ten Hag wants the best for the club, he doesn't relent but do his duty as headcoach and craves for outstanding games outcomes. Erik Ten Hag is one of these coaches that doesn't support favoritism, he always aims at the best players and they ought to be mannered because he's very strict and never backing down from forwarding his rules towards his players.