Ten Hag is not a bad coach , the only problem with coach he doesn't know how to use his players well. When a player is not doing well the best thing to do is to look for an alternative to see a better result. If there is no better improvement for Manchester United this season I think their is a need for a new coach to bring up something different.
There are not many quality players in Manchester United and Ten Hag already tried to rotate many players in many positions, but the results weren't going well. I would say the situation is kinda fucked up, Ten Hag can't do more experiment and Manchester United's performance is still awful.
I expect Manchester United will suffer many losses and draw till the next transfer window opened.
Ten Hag really have a good record since he started is managerial career and that what brought him here, his excellent performance in Ajax is what make Manchester United signed him but I see he is not been lucky to display his talent here in Manchester United, Ten Hag is really facing tough time in man Utd currently unlike last season that many clubs were facing poor performance like Liverpool and Chelsea that why they are not the talk of the day, but this season Man Utd are the only team that declined in their performance among the top English teams.