Game difficulty

I play full manual in ultimate difficulty in a carrer mode with cremonese and i won every game, the cpu dont atack, i try to change the sliders a million times dont make any difference, they just dont pass the ball, now you can defend better but the cpu dont because the instructions, full backs dont defend for the cpu then i can defend easily, and atack easily aswell, besides even if i had no defenders the cpu would hold the ball with one player forever and i would just take his ball, the sliders about the build play and everything else dont make any difference.