Replacing Ten Hag with Thomas Tuchel seems like a joke to me. Tuchel failed with Bayern Munich. You have to be an extremely incompetent and mediocre coach/manager, if you fail to win the Bundesliga with Bayern Munich. Yes, Tuchel won the Champions League with Chelsea, but that was during the pandemic, when most football clubs had difficulties with infected players and other sh*t. I don't remember Tuchel winning the French League with PSG, maybe he did, but winning the French League with a multi-million team full of super-stars is supposed to be easy.
Something really needs to be done, because since the start of the 2018/19 season, they have spent 1 billion euros to sign new players and only raised 235 million by getting rid of those considered unnecessary to the club and still continued to do very poorly. In any case, this is a lot of money spent for little result as only Chelsea and Paris Saint-Germain spent more money in the same period, but none of United's main rivals earned less from their transfers.
In short... the English team's huge lack of success is certainly due to the huge waste of money and the lack of experience in good financial management.
I hope that United will now be more intelligent in the transfer market, that they will be able to act more quickly to recognize and sign rising players for lower prices and that will bring them better results.
I don't know if Sir Jim Ratcliffe's Ineos group will manage well, but I don't think it can get any worse than it already is.