You can't win in gambling without losing because gambling is all about taking risk and losing. If you want to win without losing I think investing is the best thing for you.
i don't think that investing is the best thing for the OP because investing have a high risk too and its equal with gambling but of course gambling is higher than investing. but we can not win gambling without no lose, its impossible like many members said and better the OP careful when he playing gambling in that sites.
Investing is the thing as risking and gambling, just like what the businessmen believes. They are gambling their money in terms of business when they are investing into something. There's no way to win in gambling without losing, if you wanted to have a perfect record of wins without putting stain on it, just don't gamble at all.