Fight for ball possession?

How do you fight for ball possession?
When I am attacking somehow the defenders pull me back or they stick to me even if I was 1 meter ahead. It feels like I am carrying on my back a gorilla. On the contrary when I am defending and I try to recover the ball frequently the strikers do not let me get close to them and in many ocassions they actually bounce me back and they can go freely.
This is not about shielding the ball because I know how to do that. What I do not know if how the other players can protect the ball while they are moving forward and how can they catch up with me and pull me back even if I was 1 meter ahead.
Thanks|||depends on the stricker like rooney will be harder to get the ball off compaired to someone like villa who will be easy
but also its about how u make ur striker run u want to try and keep your back to the defender dont let him get along side your striker|||I thought that perhaps people were using a combination of buttons. I am receiving goals in which the striker literally drags my defender. What it is frustrating is that the other players steal the ball from my in a very solid way. My players go down or away. When I try to recover the ball even if I am close to the forwards I can barely recover the ball and then they recover the ball right away.