how to describe this kind of chess game ?


It's a good advertisement for not playing those early Bf4 lines.
White did not seem to have any kind of plan. I looked at it a couple of times and it seemed that White was just trying to develop and got himself into a backward, material down position with pieces on odd squares. Maybe it can be a learning experience. If you play Bf4 early, don't fianchetto your King's Bishop, because it limits escape squares. Maybe h3 & e3 would have been tougher, giving the Bishop a retreat to stay on the h2-b8 diagonal while propping up the center & aiming the other B at the K-side.
Black was no genius, he just played more aggressively against weak pieces.

like your comment drspudnik . but i really wanted to draw at the beginning as it was the kind of chess game that i dont accept at all /

Very good for a beginner game, but a bit of an underperformance considering the rating. Just my opinion.

very bad performance but i think black is the one who made performance bad as he exchanged nearly all pieces for no advantage at all .

I only say so for white because he let the d pawn get eaten for no reason and his knights were never really coordinated.
As for the exchanges, I like almost all of them by black. He's a pawn up and his king got closer for the endgame, so I don't think it was wrong to simplify into this winning endgame.
White got the pawn back on b6 but by then black's king is close enough / bishop vs knight that it's not a walk in the park for white.