You need someone that will help you losing the addicting. Or get into sports,not sports betting.
Someone that controls you and keep you away from the gambling websites.
Block yourself from accessing this websites.
you are right, there are professionals who help with that in my opinion, and you might need to seek their help then as i doubt there are any other ways
Blocking websites I think will never help because once you want to gamble again you can just unblock it as easy as 1-2-3. I think this kind of solution will never help. For me, having a good friends around you and try some other stuff with them will help you stay away in gambling.