Many of us have experienced experiences like yours where we mistyped the betting money, which caused us to experience a bigger loss than we expected. But it has all happened, and we can't do anything about it or even try to recover from that loss. That could make some gamblers think about activating the self-exclusion feature so they can't use more money. But some people type the wrong amount of money that they want to exclude from those who originally only wanted to write down half of the total amount of money they had, but instead, they wrote down all the money. But if the person has strong self-control, he doesn't need to activate the self-exclusion feature because he can control himself when gambling and can also manage the amount of money for gambling. He also won't lose much money because he always uses small bets whenever he gambles.
Of course, limiting the size of bets and the maximum amount you can lose is quite important, but simply not allowing casinos to give credits is enough. Then it will be impossible to win more than the player's balance. And restrictions sometimes due to software and other errors can simply not work
For me, I don't even like a casino where that limited amount to be withdraw or deposit has restrictions. Although this might be a good reason to prevent money laundry especially from drug dealers transferring the money from one wallet to the other. We need to be careful especially for casino regulating their platform to prevent it from the anger of the government like FBI from attacking a casino because it was known to be harbouring funds from criminals. This is why some people do not prefer KYC casinos because of so many reasons.