How can i defeat a 4-1-4-1 formation

[Tactician]

Well, he changed his formation to 3-4-1-2, while a played a 4-1-2-1-2 attacking through the middle. To cut the long story short, i won 1-0.

So, you have a beaten a team having much better quality than you. It seems that he did not attend the match.
May be you deserved to win.