City suffered a disappointing 2-1 loss against Arsenal at the Emirates Stadium on Monday night and the defeat has put serious question marks on the Citizens' title prospects.
Apart from the blow in the title race, the defeat would have been especially difficult to take for Sagna due to his prior allegiance with the Gunners but the Frenchman says that he is not dealing with the result on a personal level.
Sagna told the club's official website: "It was vital to score because I know this team quite well. I think we played quite well in general, of course we conceded some chances, but apart from that we could have scored before they did.
"It's not a blow personally, I want to keep working hard, I want to fight to the end because we have many games to catch up, of course we have a gap now but as I said the league is going to be very long. We have to play them at home, we have to play Leicester so we have to keep the head up keep working and keep sticking together.
"We conceded two goals and as a defender I can't be happy about that. But we need to communicate a bit more, to focus a bit more and to stick together as team a bit more and I think it will be okay."