Not only on the field, Pep Guardiola also faces the
problem of his wife filing for divorce so it is natural that Man City performance can be bad because mentally Pep Guardiola is under a lot of pressure from outside and inside the field. If in the end the bad results do not get him fired, it means there is something wrong with the management of this club which seems to show how unprepared they are to face change.
I dont think Manchester city's poor performance should have anything to do with the coaches personal life because we all know this team have been through a lot including injury worries and also the problem of ageing players in the squad who needs to be replaced and also the problem of psychology which has impacted the entire squad as a result of their poor performance from previous games where they suffered some serial defeats both in the domestic league and in the champions.
Haven mention all these it wouldn't be nice to say that Pep's personal family problems could be responsible for the team's poor performance because if the story of his wife wanting to file for divorce hadn't come out to the public then no one would have known about it or insinuate that it could be the reason why the team is suffering.