Guardiola having the worst days in Manchester City and we know that. Now they even lost the game against Juventus in the Champions League and that's not good at all. Guardiola is falling and he is not the good coach as were expecting to see in this team.
He extended his contract with Manchester City to show he is staying there but with this bad performance we see from Guardiola this won't be surprising to see him leave the team.
Guardiola has a hardest season in Manchester City, as they can win or fail to take Premier League title but having many bad matches in streak like this is the first time. Bad streak like this is terrible for all coaches and clubs, not only for Guardiola and Manchester City. It looks to be amplified and worse than usual because it happens in Manchester City, the dominating champion in Premier League last 7 seasons.
Many people think he's quite arrogant and is only concerned with himself. He does like this because he thinks the club won't be successful if not him as a coach. he assumes the success of Manchester City due to his role, and he tries to prove it with the current situation.
A successful coach has high ego, that is not surprising. You can be humble when you are a young coach and has yet succceded in your coach career, but when you become a legendary coach like Pep, Mourinho, Klopp, you will become very arrogant with your react. It's human reaction that is common in all successful coaches.
I see it's true that domination of Manchester City in Premier League has big contribution from Guardiola. Previously, they won 2 Premier League titles, but you see that with him they won 6 Premier League titles within 7 latest seasons, that's very impressive and that's nearly impossible to be repeated by other coaches.