I think, Napoli's mistake is to change the coach with a very short time, of course, this factor also has a bad impact on the team's performance this season. After all, the fact is that with the previous Garcia also at least Napoli can still compete well at least in the top five. Although indeed, it does not guarantee to defend the title but at least, Napoli can still compete in the upper zone in the Serie A standings and I think that's still good.
Currently, Napoli must accept the results by firing Garcia and appointing Mazzarri to become Napoli's head coach. Unfortunately, with Mazzarri it looks like Napoli are getting even worse results and with that, then of course there is no good hope for Napoli this season, maybe also for all competitions, not just in Serie A.
I don't think with head coach position have change with Napoli under performance in this season but they have loss some key player in defender Kim Min-jae made Napoli have conceded many goals in this season and not performed well with Khvicha Kvaratskhelia and Victor Osimhen. This main problem why Napoli have dropped outside from top fourth standings position and still inconsistency performance, Napoli not quit well with transfer activities, when loss their key player not try to find with the same level and Napoli want to make efficiency with transfer fees without need to spent much money.
Rudi Garcia have leaves his position in short term will the same face by Walter Mazzari become the next sack manager after inconsistency his performance with Napoli?