Game with Beth Harmon age 15... Win?!?!!!!!!!? Analyzation!

Ok I will admit I spent 45 minutes playing this game trying to find the right move!
But I am not here to ramble about how I played .

84 moves

Analyzation 

On move 6 I played Queen to d3 expecting my opponent to take so that my C pawn will get to be a center pawn making up for D pawn. When my opponent played e5 (which is a very good central control move ) I realized that I had maken a mistake.  In my role playing Qxd6 I blundered twice against Beth because moving my queen twice allowed my opponent to take with developing pieces (tempo). Then on move 13 I played f4 thinking that my opponent will be playing a move like en passant but then I realized that  Bxc3+ would ruin my pawn structure and make me have double pawns, but instead Beth (15) played Bd6. I blundred a free piece on move 14 where I could have instead took the bishop which would allow me to have a dominant rook but I missed that chance and played a different move.

Main takeaways 

• Move 6 -  Expecting a move but opponent played different better move
• Move 13 -  Missthink. Thought my opponent will play a good move but there was a better one but my opponent didn't play it.
• Move 14 Missed piece.