I think I have a contrary opinion to yours concerning Chelsea manager's reaction to his team's defeat in the hands of Manchester City. He said the condition of the pitch was too bad and that caused the team to underperform and Manchester City manager Pep Guardiola also confirmed Enzo Maresca's claim about the pitch condition. I know that a lot of Chelsea fans are eager for nothing but success under their new manager but they must first give him all the necessary support and time to succeed.
Talking about sacking him, I don't think there's anyone who would want to sack a manager that's yet to oversee a competitive game.