City lost 3-1 in the Europa League in Poland on Thursday, their third successive defeat.
“I’m disappointed because we don’t deserve to lose this game,” said the Italian.
“At the moment everything is against us, we are very unlucky. We played a good game and we had a lot of chances to win, but we must continue to work.
“We lost the last three games but that is football, sometimes you play well, you deserve to score but you don’t.”
The Italian added: “I’m disappointed to lose the game but I’m happy because they played a good game. It is important that we keep going.
“Tonight we were missing 10 players that were at home. We have 20 good players but sometimes you can lose a game you do not deserve to lose.”
