There was never a way to gamble safe and there also never will be a way to gamble safe because gambling is not safe and its something that you cannot do safe too.
You can do some things to have minimal losings but that is all honestly.
One way of gambling safe is not to use your own money to gamble. So one way to get other people money is faucets. However, not related to gambling, there is also ways to get other people money like crowdfund to design a product and so.