The Italian coach revealed he decided to step down a month ago, pointing to a fractured atmosphere and lack of unity within the club as the main reasons behind his exit.
Speaking after Napoli’s 1-0 victory over Udinese on the final day of the Serie A season, the former Chelsea manager admitted he no longer felt able to continue in the role.
He also suggested the environment around the club had become increasingly difficult to handle behind the scenes.
“On Napoli I failed in one thing: I wasn't able to bring compactness to Napoli and if you don't manage to do it, it becomes difficult to fight against other teams," Conte said.
"I've seen a lot of poison and those who spread it are failures. Napoli doesn't need failures, those who need a like.
"It needs serious people who want to love the team, just like the fan who pays for the ticket, instead these people should stay away because they are harmful.
" I failed from this point of view and I understood that I would never be able to compact the environment. For me it was fundamental, so I raised my hands.”