Hey, I saw the review and I started reading your response to it but I wanted to comment something on this real quick. I just wanted to tell you that you did not fail.
You have a working game that someone was able to experience. This is so much farther than many others ever get. You should feel proud of what you accomplished and take that to move forward and make it even better.
This is your first success, your first hurdle, and the first of many accomplishments to come. Your response to this will shape the rest of your game so take a step back, give yourself a pat on the back, and use this as motivation to continue working on your game.