We always start betting at small amount of bitcoin and suddenly make it grow but whenever we reach such amount we always lose alot even when you change your winning chance to 90% or 95% you will get 5 losing streak. Is this just coincidence or just sites have those kind of stuff that make it happen??
As you play for an elongated time, you run a higher
risk of ruin. Alright, now to understand, you need to think about the amount of TIMES that you choose to bet. If you continue to bet over and over again, there's a high chance that the house edge will catch up to you, and you'll hit a losing streak and then go bankrupt. That's kind of why the martingale system is guaranteed to fail statistically. Obviously, over a short period of time, you have a lower chance of losing everything, but realize that eventually your luck will dry out and you'll lose.
The % win rate does not matter. If you have a 90% chance of winning, you could STILL statistically lose 30 times in a row. It's unlikely, but the more you bet, the more OVERALL chance you have of getting a losing streak.