How can you say the coach has nothing to do with the current situation of the club? We all know that when a good coach enters a club, everything changes for good.Arsenal team was in shambles before Arteta came,but he has changed alot of things about Arsenal,their playing style, aggressiveness,their defensive nature and the mentality of the boys.So when a good coach manages a team,there is every tendency that the team will do well.If Ten Hag was very good,Man u would have one of the best teams in EPL now.
I agree with you because the role of a good coach to the development of a good team is such that can't be just overlooked because it will definitely tell on the kind of results the team gets at the end of every season and the kind of trophies they will be able to get by the end of the season aswell too so all these been combined together can literally tell and show how well the coach has been capable of handling the team.
Manchester united is suffering as a result of a poor coaching system, if ten hag was a good coach enough, he would be able to not only manage the team, but will be able to aswell get the team to be better and productive a d even if he's gotten what may look like players who are not compatible with his style, he will be able to adopt some kind of flexibility which could actually help them a long way just like I'm the case of Arsenal a.s Leverkusen, these too teams were not any better than Manchester united before the arrival of their recent coaches and now see how well they are doing u see the supervision of these coaches.
Sacking ten hag will not solve all the problem Manchester has got, but it will go a long way to helping them get to solve their problem because I even think that at some point, some of the players don't look comfortable with him anymore so they too will perform even better when he eventually leaves, if Manchester united get a good coach, their performance is definitely going to change because they have got a good depth and aswell they can be productive too.