Amorim has finally delivered its first trophy. 
Now their fans should rejoice and celebrate this moment. Perhaps with this happy start, Man Utd can once again achieve much better results in real competition, especially when they don't have to focus on other competitions. But Amorim still has much to improve, especially in defense, which is still far from perfect.
Congratulations to them.
But the squad built by Ruben Amorim still seems to have a lot to improve. While they've certainly improved a bit, as you said, their defense isn't solid enough. And I doubt they can withstand the fast and powerful attacks of stronger clubs like Liverpool, Manchester City, and even Chelsea and Arsenal. But I think Manchester United can still improve to a greater extent, because this team is truly filled with quality players. The only problem is that the manager must be able to maximize the potential of each player in the Manchester United squad. Now their fans should rejoice and celebrate this moment. Perhaps with this happy start, Man Utd can once again achieve much better results in real competition, especially when they don't have to focus on other competitions. But Amorim still has much to improve, especially in defense, which is still far from perfect.
Congratulations to them.