Okay, sorry that I didn't read every discussion in this thread but I checked the first post and am confused.
I played this formation:
----ST-ST-------
AML------AMC---
-------MC-----MR
DML-------------
DL-----DC----DR
-------GK-------
Everyone in their natural positions, and I got 20% possession. I've got a GK, 3 Defenders, Midfielders in the middle and the flanks, and Strikers. What have I done wrong?