Then I have all sorts of thoughts blaming casino, like do they manipulate the result of the game when user goes all in. I am sure they are all fair, it's just that the possibility of losing the game may be minimal but it's never 0.
High expectation to win push you to question if it's provably fair just because you go all in and lose. That's not unusual for gamblers to think that way everytime we're in unfortunate situation. However keep in mind the risk when you started to use your money to bet.
You can never be certain, the reason why we should not expect to win because losing is inevitable even in a point that you're confident with the possible result that's why you go all in.
Gamblers will always have high hopes of winning. They gamble and want to win but they don't realize that they can't always win. The casino will be the winner.
When we lose, we will definitely blame the casino and cannot accept the loss and that is normal. But if we can think clearly, we shouldn't blame the casino because that is a risk in gambling. We will experience more and more losses, especially if we go all-in.
That's why when playing gambling, we have to be able to position ourselves well so that we don't experience a lot of losses. We have to control how much money we use. When we can do that, we won't experience as many losses.