I don’t really know why Manchester City didn’t perform well in the match, maybe it’s because of De Bruyne's injury. I think Pep Guardiola has to look for a replacement for De Bruyne because he will be going for surgery and he won’t be coming back soon. Let’s see how Manchester City will perform against Newcastle in their next match. I know it won’t really be easy for Manchester City.
The departure of some of the best players means they don't have a similar replacement yet. Gudongan, making the midfield line has no attack creator other than De Bruyne. If Bruyne is injured then Man City are like losing a creative person. I think against Sevilla they lost 2-0, it was difficult for them to win. Unfortunately, several goal-ready chances failed.