Shaking Off Players

When my attacker gets the ball (let's say Real Madrid's Benzema), and there is a defender on him, I can never shake off the defender and I always lose the ball.

When the situation is reversed and I'm the defender against Benzema, the opponent seems to shake my defender off pretty well and continue to score.

I haven't been able to figure out what's the pressure button, or if there is a technique to apply pressure to shake other players off and keep the ball.

I lose many many balls this way, and no need to say, this is hurting my score badly.

Is there any way to shake off other players, and keep the ball? If it helps, I'm playing on the PS4.

Double-flick the R stick forward and a little bit away from the defender. That will sent the ball in front of you, and you can win the race to the ball and get in front of the defender.