If at some point you feel that gambling is contrary to your principles, for example, such as family, friends, helping people, then obviously the right decision would be to refuse gambling or at least review your behavior.
If that is the case, you should realize that gambling is not for you because there is a contrary to your principles. No matter how hard you try to playing gambling, you will feel that is not right because you know that is wrong for you to playing gambling. It is no problem if you don't know anything about gambling because playing gambling or not is just a choice. People are free to decide which will they choose, while other people cannot force them to play gambling. Perhaps, you need to try to say no for playing gambling from now on if someone asks you to gamble.