These problems continue to exist through many coaches and even with Ten Hag, they are still existing and effects are harmful for the club performance, results in many competitions generally.
I see it is very unfair to say Erik Ten Hag is responsible for all bad things that are happening in Manchester United. He must be given more time like how Liverpool were patiently with Klopp years ago, then they harvested sweet achievements with one Premier League, one Champions League trophies. Manchester United can gain a same with Ten Hag but they must give him more time and support him to have players he wants.
Maybe you mean that Manchester United needs to be patient in reaping the current process, but the fans don't want to see Manchester United continue to experience decline and everyone blames Erik Ten Hag for everything because Manchester United progress depend on him.
I don't blame Erik Ten Hag, its just that maybe there are a lot of problem that have hit this club so that Manchester United experiences some difficulties when facing match in the English league and in the Champions League, but I hope that Erik Ten Hag is able to bring Manchester United back to its glory days but not wait for the process to take placed for a long time it was feared that Erik Ten Hag would soon be replace because the Red Devils did not want to be slumped in an uncertain situation for long.