I believe Coin Hi low game on freebitcoin is rigged as I have lost a steak of 12 games in a row. I bet on Hi each time while doubling my bet and lost all of my balance. What are odds to get 11 Lo in a row with 50% probablity?
You lost your balance in a provably fair game and there is no one to blame but yourself.
Having 11 losing streak isn't something impossible. It's possible to lose even much more times in a row. The strategy you were using doesn't work as you expect.