Manchester United's performances have been erratic over the last few seasons. This team has not been able to compete for the title for a long time. Despite spending a lot of money, the team is not getting success.
After about 11 years since
Sir. Alex Ferguson's retirement in May 2013, Manchester United already worked with many coaches, spent huge money for transfer and they failed through these years.
It means there are big systematic problems in their club especially in development strategies. They are not a poor club but have deep budget for spending but to succeed, they must improve and change their current failed strategies.
https://www.transfermarkt.com/manchester-united/startseite/verein/985If we check their total transfer cost for these 11 seasons, we will have shocked figure and it's unacceptable that they have been falling more seriously even they don't lack of money.
The coach can certainly be blamed for this. Ten Hag has been the coach of this team for a long time, but still he is not able to build a strong squad. Personally I think the main reason for Manchester United's erratic performance is their strange match strategy.
The head coach must be responsible for his player performances, that is true, but he is not only person who have responsibility. Players and other staffs have different tasks in the club and they have own responsibility for success or failure as a whole team as well.