Pep Guardiola has succeeded in making his players have chemistry that can understand each other, and they can also implement the strategies they have prepared. Overall they deserve to be in the final, and even I think they also deserve to win the Champions League this season. They have worked so well all season, they have even done it since last season, it's interesting that they don't seem to have decreased, yes, even though there were several matches where they had to lose their touch.
Players who become mainstays in the main squad are the key to their game so they can implement an organized game.
I think they have gone through one major change in comparison to the past seasons and that is the addition of Haaland. The season before they played with Jesus and before that they had Agüero, but both are still different from Haaland. While will score nonstop like a machine no matter what happens, I think a team still needs time to find the right balance between bringing Haaland into action and to choose a different option. This could well be seen in the first leg against Real Madrid when they took Haaland out of the game and Manchester City depended on a distance shot from De Bruyne. They could need a little bit more flexibility in situations when Haaland is hardly available. I think that they will be even better next season when there is a little bit less focus on Haaland.