First of all a big matter is that at which site you were making gambling , Because here winning and loss depends upon the factor of the house edge of the site ,[1] Here the simple house of freebitco.in can't allow you to make earning more than 5% .
[2]So first of all make details of the house edge of the site .
My second suggestion for you is that don't bet more if you won two times . Because at each bet you may loss your bet .
[1] Where is the proof if we can't win more than 5% from our balance in Freebitco.in? House edge on freebitco.in is the highest from all dice games (Cmiiw) until now 5%, that's why we are mostly will lose on there, but there is no proof if we can't win more than 5%.
[2] I think OP is not too stupid to play on site which has high house edge.
@OP, get 3 red streaks on 92% still possible (even though the chance is small)