First game( I had the white pieces)
I am confused how my position suddenly became really bad when he played the move b5 as he did in the game, because I thought I was doing well with the center and the active file. What did I do wrong that caused me to have a bad position like I got in this game?
In these games I will include in these posts, I think I am playing passively but I am not sure how I could have done better and avoided these mistakes.