His light squared bishop was staring at your c2 pawn from the beginning and still you played a3 b4 making c2 a bkwd pawn and a target for his rook. You should have thought of playing c4 early in the opening to open up the diagonal for your B on g2.
B on f4 wasnt really necessary and would be better placed on a3 or b2. You missed these better moves in the opening: b3 c4
Bad day. Didn't play well today, several slip ups. Guess it's just a case of learning from mistakes.
Appreciate any comments.