From the @OP story, I guess he is now in addiction to gambling problems as he is thinking about gambling even in school. We suggest he stop his habit as soon as possible before he deposits more money and gamble. In his situation, he needs to tell his closest family or friends and ask for help to get out of gambling before it is too late.
I think telling family members and closest friends about it is the best, especially telling family members like mum and dad will help if they are understanding kind of person, these are the people that can help. Also if having wife, there is nothing bad to let her know if in a gambling addiction time, she will try her possible best.
Gathering all of them and telling the truth can help him release the stress, although when all of his family members know about his addiction, they can become angry with him. But that is still worth doing because his family finally will accept the situation and together can search for the way to solve the problem.
Uninstall every app on your mobile phone and VPN, close your browser's tab, do something else, and make busy for it so you do not think about gambling. Go out with your friends, have fun, so when you are at home, you will feel tired and your mind will be tired to think about gambling. Make many positive things out there and leave your room. You need to try hard to stop gambling.
If the person is using credit card to fund his account, he should just destroy the credit card, it can inconvenient the person but it can help, I have done this before and it helped. If I want to withdraw, I transfer the money to my mother's account to use, no credit card for me to fund my gambling account. But about crypto gambling sites, it can be difficult because of the ease to transfer coins to gambling accounts, but maybe your method can then work.
I agree with you. Destroying his credit/debit card will also help him to prevent using his money to gamble. Related to the crypto in the gambling casino, he can give his wallet to his parents or other family members and ask them to limit his funds to gambling so he will always play gambling with limitations.
From the @OP story, I guess he is now in addiction to gambling problems as he is thinking about gambling even in school. We suggest he stop his habit as soon as possible before he deposits more money and gamble. In his situation, he needs to tell his closest family or friends and ask for help to get out of gambling before it is too late. Uninstall every app on your mobile phone and VPN, close your browser's tab, do something else, and make busy for it so you do not think about gambling. Go out with your friends, have fun, so when you are at home, you will feel tired and your mind will be tired to think about gambling. Make many positive things out there and leave your room. You need to try hard to stop gambling.
This would certainly be a great solution if you can so easily force yourself to give up thoughts of gambling before it turns into obsessions. We do not know what the state of OP is, who, by the way, as he writes, is only 14 years old. This is of course a dangerous age, but the good news is that he himself realizes that he can become a victim of his passion. This is already a good sign that he will cope. And more about blocking an account, even a cryptocurrency wallet - this is also a good way, but a responsible adult parent must be connected here - father, mother, older brother ... of this boy.
At a young age, his gambling addiction will surely put him in danger because his addiction can possess him to play gambling without stopping. No matter if that will be hard, with help from his parents and other family members, I am sure he will solve his problem and can lives better without gambling. His life journey is still long and it is better he uses it for school and searches for other things that can be his passion so his mind will not think about gambling.