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It's true, Manchester United must evaluate and try to improve its performance because Manchester United is one of the big teams that should be able to compete and remain the best. The era of Manchester United was over when its great players left behind. So the management must try to improve this so that in the next season's matches Manchester United can provide the best performance and position they can achieve.
In my opinion, Manchester United era of glory ended when Ferguson decided to retire from his post. Just look at it until now, Manchester United is always busy looking for the right coach to improve the team's performance again, but no one has been able to bring Manchester United back to compete in the title race. Ten Hag was only able to win the FA Cup, while in the Premier League there was not much he could do.
Manchester United will face tougher challenges next season, their rivals will continue to improve to reach the best position. If Manchester United does not make changes to their squad, they will have difficulty competing in the Champions League and Europa League zones.