The key ingredient is time.
You need time to recover from any addiction, that's how the brain works.
Then you also need to change something, like the way you react to specific things you experience, and the things you do when you experience them.
The brain slowly rewires itself over time.
Yes, we need time to recover from addiction. It will depend on the wishes of each gambler. Some people can be able to finish the healing process from their gambling addiction in a short time and some people are not able to finish it and instead return to gambling again, where they become increasingly addicted to gambling. This really requires encouragement from various parties so that people who are addicted to gambling can try to heal themselves and be free from their gambling addiction. The person needs to reset his brain again so that there is no desire to gamble anymore and he will do various healing sessions to recover from his gambling addiction.
That's right, in my opinion, someone who is addicted to gambling will find it difficult to recover from their addiction, because someone who is addicted tends not to want to see anything other than their addiction because they will only focus on gambling, which has become something they usually do. but in my opinion it depends on the level of addiction, if their addiction is serious it is possible that they will not be able to stop gambling and as you said they can go back to gambling and it might even get worse in the future.
and if their addiction is not too serious, chances are they can recover in a short time, but it also depends on themselves whether they really want to stop gambling or not, if they are still hesitant about stopping gambling, chances are they will return to gambling again. a certain time because they cannot control their desire to gamble, and even if they still gamble, I don't think they will gamble within the set budget, but to minimize the risk of serious gambling addiction, perhaps this can be done by reducing their gambling activities and by limiting each budget when they want to gamble, but even so it doesn't guarantee that they won't become addicted to gambling.