I will teach you FIFA by playing against you and watching you play other people online. I will find what the aspects are that you need to work on.
I've won an online FIFA tournament in the past and I'm in the 1st Division of regular season mode and of Ultimate Team season mode. I have also played FIFA for money (online betting).
I need you to have a good attitude. Never stop trying and don't give up just because you don't improve immediately. It takes time to change your style of play.