De Bruyne's performance is very important for Manchester City but this important player is not performing well right now. The season Manchester City won the Champions League trophy I would say the players in that league were very good for Manchester City although there have been quite a few changes from that team to the current team. Manchester City are clearly missing a quality player in midfield and this is evident in every match they play.
De Bruyne needs to return to his best rhythm as soon as possible or sell this player and employ another best player in the midfield, only then can Manchester City solve this problem.
Pep Guardiola is the master mind here, he does arrange for streak winnings for the club and he's getting his deserve accolades at Etihad stadium. Manchester City with or without Kelvin De Bruyne they achieve every possible trophies this season. They're regarded as the best EPL club because winning the EPL title back to back is not easy, they're the best. Perhaps they're struggling this season, due to the absence of their key men, they're struggling to meet up the desirable epic stats and that's absolutely poor records for them. However in the midfield, Pep Guardiola knows his strategy and implementing them wouldn't be a problem.