Don't forget his achievements last season he managed to bring Manchester to finish in the 3rd place and that's without Ronaldo. Indeed, this season Manchester United's performance has not improved, I think Ten Hag should be given a chance until this season is over and see how Manchester ends the season. Jadon Sancho does have problems with Ten Hag but that doesn't describe all players and Ten Hag has reasons why he should do it, Ten Hag's current focus is on getting out of pressure and preparing other alternatives to overcome injuries and internal problems.
In his first season with Manchester United, Erik Ten Hag performed quite well last season. But this season is like a reversal in Manchester United's performance because they are not able to maintain their best form. I think Erik Ten Hag should be able to make many changes in terms of Manchester United's game scheme after the international break.
Currently, Manchester United's ranking on the standings is stuck in 10th position with 12 points collected from 8 matches. Manchester United has only been able to achieve 4 wins so far, 4 defeats.
So, if you compare it with last season, of course Manchester United's performance this season has seen a fairly drastic decline in performance.
I think the internal problems that occur in the team must be resolved immediately and re-establish a harmonious relationship with the Manchester United players.