I would put all the blame on Ten Hag because he is the only coach that has used a huge amount of money to buy players above their value which is affecting the club performance and financial state. All most all the players he bought are all average players who cannot withstand the pressure in the EPL competition. United bought the wrong players and expected a magic or what.
Ten Hag is really one of the reasons why things are not going well for Manchester United to this extent; the manager was obviously not even doing his best to strengthen the team. He looked confused then, but still I was surprised Manchester United management refused to fire him then till they saw that things had already gotten worse to some extent. I was surprised why they kept Ten Hag for that long, though.
Amorim has a lot to do before he can be able to fix this club to get on track again, from getting new players to fix the weak position down to the strategy. I hope Amorim gets this team back on track by next season. The Premier League is also a tough competition, so he must do everything possible. We want to see Manchester United at the top again.