i'm a) probably not very good at it and b) just playing randos, but FIFA doesn't seem very enjoyable to me online (disclaimer, generally as a rule i don't play any games online. was heavy into the 'descent' scene way back when and that was my last real online experience).
pretty standard to just play against barcelona every single time, count on one of many garbage through balls to messi finally going in, and if you're lucky enough to outlast that then they just unplug the network cord as soon as you take the lead?