PS3 - Playstation 3

I just got a PS3 because I never had enough money for it when I was younger and it is quite affordable nowadays. I started playing a first few games, but I noticed I really like multiplayer games the most.

However, I only found a few people in a Battlefield 4 server yesterday. What other games would you suggest me getting that I can still play online?

Is there any football game that's still alive for instance?