I can only speak for myself, but I found him likeable enough as a player, I liked him and found him impressive when I heard him as a pundit before he took over Chelsea, I liked him in his first season of Chelsea where he made a good and likeable young team. But his attitude towards his team when things got more difficult turned me off him big time. I don't think he is humble enough to be a top manager, and I think his sense of status and ego is getting in the way of being successful.
He actually comes across like he thinks he is entitled to his team winning things to match his personal sense of self, and gets sulky and starts finger-pointing when they don't. And on top he's keenly aware of perception and narratives and reacts to this by protecting himself in interviews - he keeps making a point of declaring that these defeats were not a problem of "tactics" or that the "match plan" was good (it's interesting, the casual way he throws in these buzzwords to absolve himself) while blaming the player's mentality. When really, as a a manager he's got it all to prove, himself, first.
Not a pretty picture.
He did a poor job in his second season at Chelsea, and he's doing an outright horrible job right now. "Not good enough", as they like to say in English media.