I think you know that gambling is based in your luck, if you are not lucky you will loose but if you are lucky you can win, gambling also is not profitable it is just for fun but if you are looking for a profit gambling is not ideal for that, most of the users said that site is scam if they lost not only freebitcoin even other trusted site. Those users are insane.
Luck or not its still ultimately math. There are strategies based on changing bets that actually work and I do pretty damn well in IRL casinos at blackjack which has similar odds just by that bet strategy. I've also ran simulations with java. If you ever took a statistics course it will tell you that reality tends to match the probabilities. It's satoshi, not even a cent so its not a big deal to me, I'm just saying for anyone that actually wants to make money from the site just stick to collecting the free satoshi every hour and do maybe 10 bets before it starts skewing the odds. It's pretty easy for them to have a "if (play has won x satoshi or player has won x turns then make random generator only use numbers in the range not choosen by player for x turns)". It's not very hard to do..