hroub I know the feeling to lose all money on freebitco.in .. I was playing HI-LO and I earned 250k daily easy few days, then one day I playing 3 hours and earned 750k. I was so happy then.. So I decide to withdraw almost whole balance.. Thank God I did that, because next day I lose whole balance , you know why? I got 21 (if I good remember) time in row LOW ... I was so sad and angry, so I decide not to playing HI-LO game anymore. You will always lose, no matter how much you have on balance.. If I had 1 BTC on balance I will lose all, because they must have some profit. If people don't play HI-LO game ,freebitco.in will be already closed. They living from money we lose on HI-LO. 
That is the reason admin don't want to reduce the house edge of the site so that he can make more profit from this game. They also motivate people to store money on their site by giving 4% annual interest because they know that only a few % of people if they tempt in a year time and play this game then they can make a good money. Never play this game if you want to earn money.