Having a busy schedule is a very key point you have mentioned that so many persons probably have not looked at this from this aspect because they think the problem is only around the coach, for a team that isn't strong enough, Amorim is only trying to build the weak team he met and at the time he's met them he's not having the much time to get his strategies right with the players and the team getting used to his system, probably after recruiting new players by January he may get to see rise he just needs some time.
Everyone talks about new players, but isn't that what Ten Hag tried to do? He changed Manchester United, during his time as manager he brought in more than 10 players, I don't remember the exact number, and now we expect the same from Amorim, who will bring in other players and let's hope that this time everything will work out the way the manager wants. I agree that Ten Hag made a lot of mistakes with transfers, and now it affects the team's results, but if Amorim continues to lose, it may change the attitude towards him.
Expectations from Amorim were high, since Manchester United were not playing football at a good level anyway, we could say that they had a good start even if they won a few matches. But if we are watching a team that has won only 1 victory in the last 5 matches, it means there is a problem in the team. The harmony between the players and the coach is very important here, I think there is a problem with this right now.
When I look at the matches Manchester United lost, I feel sorry for them. Unfortunately, they lost points in matches that were not very difficult to win

Lolz, I actually read people's comments on Manchester united and I can't help but laugh, seeing that the majority that were all praises for Amorim's first victory on a few games as he resumed as the new Manchester united coach, everyone did think that with Amorim, all will become bed of roses for Manchester united, forgetting that even roses have torns.
I am personally not surprised with the current outcome of matches for man united, this is something I expected, and right from time, I've always been of the opinion that we give Amorim time before we start celebrating him, it was too early to celebrate him when he came, and won (I think) 4 games in a row, it is rare to find a coach who just resumes in a club, and already blends with the players, except the coach was a player before he was promoted to the level of a coach.
Manchester united will do well, but they need time, the new coach need time to properly fix the errors of the previous coach, until things are properly done, Manchester united will continue to through zig zag performance in games.