Guardiola is a very experienced coach. So even though the match against Newcastle is very important, he did not put De Bruyne in the starting XI. Because now if De Bruyne faces injury again then Manchester City will face big problem. Because Haaland is not in the squad due to injury. Guardiola desperately needs De Bruyne right now.
De Bruyne should perform very carefully in the upcoming matches. The opponents are not strong in the upcoming matches of the Premier League. So Guardiola is unlikely to keep De Bruyne in the starting XI. Manchester City will play against Burnley, Brentford and Everton in the next three matches. Manchester City is expected to win all three matches. Since the opponent is weak. So maybe Manchester City can get 3 points even if De Bruyne is not in the squad.
Pep Guardiola is still quite confident with the performance of his other players who do not include Kevin De Bruyne and Erling Haaland, Pep Guardiola implements the right strategy so that the players can play optimally and in fact Manchester City still won when they played away against Newcastle, Pep Guardiola is keeping Kevin De Bruyne from being included in the starting Xl because Pep Guardiola doesn't want his important players to get injured again because Pep Guardiola still really needs Kevin De Bruyne's presence.
Kevin De Bruyne will definitely keep his body fit and be careful when playing on the field because if something bad happens it will affect his career in football. Moreover, he wants to help contribute to giving the best for Manchester City this season so they can repeat the treble winners title like last season.