This is completely unlucky, because every bets were placed to roll above 20 which means the winning probability is quite high.
The winning probability can be high but the chance of winning every game is always 1%
And how did you come to that? I don't think the chance of winning every game can be the same. Not unless all casino games are rigged.
If you bet on 1.1x the chances of winning must be higher than if you bet 99x, right?