Roberto Mancini's men have won only one of their last four Premier League matches, allowing Manchester United to open up a five point lead at the top of the table.
The powerful Ivorian, who has been a prominent member of the City team this season, admitted that the team are enduring a difficult spell.
"Form changes because the Premier League is strong and the season very long," Toure told The Daily Mail.
"In Spain you can tell with 15 games left who will win the league. It’s not like that here.
"It’s difficult at the moment as lots of bad things have happened to us recently. We have had some games when we have looked tired and have looked like a very poor team.
"Sometimes we have done things wrong on the pitch because we haven’t worked well on the training ground."
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Yet Toure, who signed for City back in 2010, was quick to reiterate that his team had not given up just yet and would continue fighting for the chance of silverware.
He added: "It will be hard for us now as our fixtures are very hard but we must not let ourselves down.
"We must fight for our manager Roberto Mancini, but also for the club because the club has invested a lot.
"We have to be realists. We have to win something this year as we have a fantastic squad. To win nothing isn’t acceptable. But I am keeping my confidence.
"I am sure we can give Manchester United the right fight. It’s not finished yet."
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