I would say next time let other people test your game before you put it out. You did a great job at marketing and you had a good initial start. Be proud that you sold some games on steam. You had a few reviews on youtube and had a nice following. From what I saw on youtube there were too many problems with gameplay and the final quality of the game. There were some positive. You got your game on steam, you got people to review it on youtube, and you sold some copies on steam… Take a look at some of the reviews and try not to have thin skin and learn from them. Don’t give up the next game you make a game it will be better.