Yeah, you can't call a timeout if the other team has possession of the ball (unless it's a dead ball situation).
Yeah when I tried L1+R1 it was a dead ball situation but I guess I did too late and ended up fouling. And I just thought there was no way for us to call timeout after that. But now I know it works, since I tried it again while on offense. But thanks.
Most of the money you'll win at poker comes not from the brilliance of your own play, but from the ineptitude of your opponents.