gambling is based on luck not on stratgy. if you are using maths to win sometime then you can not win in a long run you will have to face the house edge at the end which no one can win
There is LOTS of sites where you can make a long term expected profit.
https://www.betmoose.com,
https://bitbet.us/,
http://battlecoin.org/ and all the poker sites is just a few of them.