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.