City have expressed their intention to appeal UEFA's ruling, with the case being taken to the Court of Arbitration for Sport with club chiefs hoping to have the decision overturned.
"At times it does feel like the world is against us. The money Sheikh Mansour has invested, ever since it has come in it is like we have become the new Manchester United," he said on Sky Sports.
"We have tried to be humble with the money spent at City but at times it does feel like everyone is against us."
Richards also insists City can win the Champions League this season.
"These players are strong enough, they have the character, and they know they have to do their work on the pitch. Don't think about things off the pitch, City are contesting it and they have every right to."