Maybe they are just lacking in putting pressure on their opponents, and with Amorim this might help them to rise again from their slump. However, with the news I found about Amorim stating that he could not fully implement the sporting style of play at Manchester United. I think there is a possibility that they can rise again from their slump, because I think Amorim can provide good education to his team. In addition, there are several Manchester United players who can shine under Amorim's guidance, with them Alejandro Garnacho, Diogo Dalot, Rasmus Hojlund, Manuel Ugarte, and Bruno Fernandes. With their respective skills I think Amorim will give them more training.
Yes, that's true because if Amorim brings the style of play from the previous team and will be applied to MU, it will not go well. And I'm sure Amorim understands how competitive the competition in the EPL is and must have a really deep strategy.
Amorim only needs an understanding to explore some of the obstacles that must be removed from MU and also provide a little change to create stability in Man United performance.
If Amorim succeeds in the next 10 or so matches, I might believe that he is able to bring MU back to its glory days.