French Defence Counter

There are more ways , but one way is the Nd2 way and this is the game I won because of my piece's position

Whites position looks terrible there. It's a bad version of the french exchange.. your queen is pinned, Nb4 is also a threat, your DSB is just sitting there staring at a pawn... your queen can't even unpin yet. It's the french exchange so already drawish for white... your position sucks.
You don't gain anything by rushing Nd2 here.

After queen unpin we can attack

BTW My opponent is a FM

There are very few worse openings than that one which come to mind for white. Short of absurd ones. I'm not exaggerating. In just a few moves you have thrown away every advantage, I can't even think of one reason I would play your line. And usually I can, even for bad openings I can think of reasons.

For example, your opponent could simply play this very obvious move and your position is dogshít, you lose your most importance piece which often is blacks goal of trading, or lose control of the diagonal and allow Bf5 which is worse. And it's not like this idea is hard to think of, it's an already known and basic idea in the french exchange. Often black plays Ne7 to support Bf5 in order to do this, then reroute his knight back to a good square, you allow him to do it instantly using his crap knight instead of his good one... your line is terrible -