It was thequin who shared it I think, like when you gamble 10+ thousand times like that, it becomes 50%+ chance to have at least one 10+ in a row loss,
If the chance of winning a single bet is 50% and you play the game 10,000 times, there's a more than 99% chance that you have 10 consecutive losses.
Even if you play the game half of that (5,000 times), there's around 91% chance to have 10 consecutive losses.