Amorim has found a good composition for MU; he's put Rashford in the right position now, Rashford went crazy and created a lot of chances before creating the 1st goals. While Bruno created the movement to outwit the opponent and provide opportunities for the attacker to stumble on the front. This is what the fans want; MU has now developed an offensive strategy with accurate passing.
There are so many big changes were implemented to be effective. Amorim was brave to rotate the players, and success winning the match. I was previously skeptical when I saw Zirkzee, Mainoo, and Mazraoui as starters because those names do not look familiar to me. But apparently, it runs very effectively create score on 1st half.
It's a big win for Manchester United and they kept their clean sheet that is a very good signal for Manchester United moving forward with more good results. Their defense system is not good recent years and if Ruben Amorim can fix their weak defense system, it can become a solid foundation for their success with this new coach. Manchester United don't lack of good midfielders and attacking players so if they can have a bunker in defense, they will be able to play better in attacking with more worry about their back line.
Rashford is a good attacking player but he does not have strong mentality and it affects his performances when he has to play under big expectation and pressure. He is returned to his favorite position and plays better, but he will maintain it if Amorim can help him to play with as least pressure as possible.