Yes there are some safe methods but they will only help you to lose as less as possible, gambling is always risky if you ask me, this is due the point its called gambling right ? At gambling you just need a factor of luck, because you always have to have luck.
There is no safe way or method in gambling, as the simple rule of gambling is gamble what you afford to lose, simple as that. And if you think,
you are lucky enough in gambling then you will with your strategy in gambling. But in the long run, no assurance that your money will be safe
even if you have so many methods on it.