Yeah, it is of great concern how Manchester United's performance is declining in the Premier League slowly, and the Manchester United board has brought in different coaches to Manchester United so that Manchester United can perform well and start challenging for the Premier League title, but none of the coaches the Manchester United board signed were able to change Manchester United's poor performance. Ruben Amorim did a great job at Sporting CP, and I was looking up to him to change Manchester United's situation next season, but with how Manchester United is slow in signing players this season, I am not expecting much from Ruben Amorim because he's yet to get the quality players that will help him perform well at Manchester United next season.
I also don't understand why Manchester United is having such a hard time recovering from its slump. As far as I know, since Sir Alex Ferguson left, there hasn't been a significant change in performance. As we know, Manchester United has brought in numerous managers, but strangely, none of them have been able to bring Manchester United back to its glory days. Furthermore, the coaches Manchester United has brought in are also not ordinary coaches. As we know, these coaches had excellent track records with their previous teams before joining Manchester United. But after taking over at Manchester United, they seem inexperienced and have struggled to boost the Red Devils' performance.
So, I don't know what's wrong with Manchester United, that they continue to struggle to recover despite having changed managers so often. Furthermore, I personally don't see any glimmer of hope for Manchester United next season. Because right now, as you said, there haven't been any real changes that could really highlight Manchester United. So, with this in mind, Manchester United will likely struggle to compete again next season. After all, the Premier League teams are moving quite quickly and have significantly improved their squads. So, with this in place, it will certainly make things even more difficult for Manchester United. However, I hope Manchester United can perform better, as they won't have a busy schedule next season. This will allow them to fully focus on all their Premier League matches.