Ten Hag is certainly responsible for his team's poor performance so far, but all players must also be responsible for their poor performance on the pitch. The fault is not only on the coach, but the entire team is to blame for the performance.
I remember there were several players who deliberately did not play at their best because they didn't like the coach. They played so badly that the coach was sacked for poor performance, it worked and I really wonder if that scenario was thought of by a handful of Manchester United players? If that exists, then I'm sure that in the end Ten Hag will be fired even though he managed to lead Manchester United to qualify for the current Champions League.
I don't agree that ETH should be fired from Manchester United. In my opinion, the worst situation at Manchester United recently is not only the coach, but all the players must be responsible for their own play.
So if I look at Manchester United as it is now, it is more or less the same as what Liverpool experienced last season because of the storm of injuries at Manchester United. The players were also exhausted last season from playing 4 leagues and a World Cup which made the team's schedule worse until Manchester United played eight times last February (this is just an example). Manchester United just needs time to recover, so they have to give ETH the opportunity to build a strong squad.