Thanks Ian. As you say, I am behind in development so that supports the idea of ignoring the pawn attack in favour of developing a piece.
I should add that I only know this c4 push to be a mistake because I looked at the computer analysis after the game. I also looked at Qc7 and Rc8 with the computer. Without wanting to spoil anything, neither of those options are the best move.
The position is far from hopeless, but already at move 11 this is a very tricky and confusing position for me.
I played a short Caro-Kann game https://www.chess.com/game/daily/332627954 and there is a particular mistake that I made which I would like to understand better.
I was Black and it is my move here.
My c-pawn is under attack.
This is a push/capture/ignore decision which reminds me of the lesson https://www.chess.com/lessons/reading-the-board/push-capture-or-ignore
I decided to push, and I played c4.
The reasoning was if I did not move the pawn he would play dxc5 and if I retook with the bishop he would take my bishop with his bishop. Also c4 creates a space advantage for Black.
Why was this a mistake, and what is the best move and why?