No there are no safe ways to gamble, its just that and I think that there cannot be said anything about that because its true.
Gambling is not safe so I think that this is also a stupid question.
Gambling is not safe and the only way we can do is to minimize the risk of losing a big amount of money, before you plan to gamble you need to be fully educated to understand your chances in gambling since it is a risky game that you can lose all your money if you let your emotions play with you.