The City boss, however, was disappointed with the penalty awarded against Micah Richards for shirt pulling in the 2-0 defeat at Goodison Park.
"I am not a magician," he said after the match.
"I am a manager and I do not think I can change the situation in a month.
"But I believe we can improve game after game. That is possible.
"It is a long season."
On the penalty decision Mancini added: "For me it was not a penalty..
"You do not see it given for this reason in England - maybe in Italy.
"If this is a penalty then there are five, six, seven, eight [in every game].
"But we have to accept that Everton played very well and better than us."