OTB dego schalm

I'm playing as black 1st time in an OTB that it eventually was a pawn end game.
And i just had one more pawn, i think it was all well played.
Chess.com rated this game players levels as white 1800 vs black 2150
Well it took about an hour, and it was a bit exhausting to think of all the possibilities.
Well not a bad game I think for black and white didn't give it away either.
White had planned to go queens gambit, where was thinking of Sicilian defense.
Though it never came to that, my opponent called it 'Old Benoni'.
I don't remember seeing the position as something familiar.
But apparently, I had played it with a 37% win rate for black on chess.com statistics.
So, well this time it was win for me as black.
It wasn't obvious when this game became decisive, where the breaking turnover happened perhaps when my queen took a pawn at the end of the mid-game, at that time it seemed harmless, but eventually, it was a pawn more for the end game.