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.
Even you are very careful in playing gambling it doesnt matter ,you must know yourself why you play gambling its defintely clear you can't win in gambling with no lose even gamblong house made some lose but it too a little bit than their income everyday .If you make some stratedgy or cheating in a game sure it will be detected by the House because it not normal as they program in favor of them.