You can't find a pattern on this rolls.. your mind is tricking you, winning 8 times in a row wont make it more likely to loose on the 9th since with bayes theorem, probability wont change and will be the same chances of winning and loosing than if you were just playing for the first time. Applying this, you can conclude that for example (as Dooglus posted before) Winning 5 times in a row with chances of winning of 0.2 is (0.2^5) but when you are actually playing, the chances of winning next time is 0.2, there's no such memory thing that actually remembers that the last chance you won or lost so that you can play safely and win.