There is no way to gamble in a safe way because the chances of you winning are still going to be the same no mater what you try to do.
With most of these gambling games luck is required in order to win and that is a fact.
How can you require a luck when you cannot control it, skills is more important because we can develop it by reading the relevant method to win in gambling, part of our strategy should include controlling our self because if we fail we will suffer in the end.