Based on my experience on almost a year of playing different dice games, they let you win at the start, later on successive reds will pop out like mushrooms. With thise technique i have doubled my balance twice a week since im not into full time gambling.
On a provably fair site, the house cannot modify the bet results secretly without the players knowing. So they cannot purposely let you win more in the beginning nor purposely make you lose more. It is all about luck and luck only.