When a gambler have lost so much already. This makes them hard to quit and that's why being a responsible one is quite hard when you've got a lot to worry with.
And so, even some gamblers would like to be responsible, they just can't because they can't help themselves and doing it at first glance won't have an instant result.
They can do it somehow by changing a little by little until they've fully been changed. Start with small deposits and maintain that for as long as they can and to control the amount of losses that they might have just let it lose.
That is why a person needs to be responsible at the beginning of gambling. It is necessary to keep himself under control at all times. He needs to be aware that he does not lose a lot at once. As you said, if someone has already lost a lot in gambling, it is not possible for him to get out of gambling. Then he gets involved in various types of criminal activities to earn money from gambling. Then he himself is destroyed and his family is destroyed. But if that person can control himself at the beginning, then he can gamble while keeping himself under control, so if he is addicted to gambling, he can get himself out of it.
Therefore, at the beginning of gambling, you should prepare yourself in such a way that you can get yourself out of any situation at any moment.