Help me to set correctly tactic 4-1-2-1-2 diamond

[Nguyễn Ngọc Tưởng]

Hello guys, i have been a gamer of topeleven 5 months so far. im really interesting with this game, but from the last update i was suprised everything... i can be beaten even by one of the weakest teams in my league. sometime i drew not like last season. i dont know why or perhaps i set wrong with this tactics , so please show me how i can do for this .!! thank you all guys, my dream , winnning all three tournaments which are near !!!

This my team , plz give me the infomation to set correctly ..