Sagna left the Gunners for City earlier this summer.
"It won't hurt me," he said. "I'm ready to expect anything now.
"It's not easy to read some comments on social networks. I know it's only a small minority and not all the Arsenal fans, but it's still not easy to read it because I feel I gave everything.
"If I was the first one then okay, but I don't know what to think. Every time a player leaves they seem to get abuse. There are so many on social networks but that doesn't represent the whole Arsenal family.
"To me, I made the right choice and I'm very happy to be here, no matter what they think. I'm not the first one to leave their club and I won't be the last one.
"I'm looking at my personal life now and I want to fight, get in the team and give the maximum. I don't look at the negatives."
For the big stories and the banter follow us on Twitter: @tribalfootball