Gambling sites know all the Strategies which can make the customer win, so they have already the control in place. Few of the time some strategy might work but most of the time it is our luck through which we win gambling. If you think that our luck is not good than we should not gamble.
Not all gambling sites know all the strategies but sometimes they miss a time to fix the bugs that are open in their site, and this makes some gamblers can win easy. But for me, the strategy will work well if I have luck because I only need luck in the gambling games. Besides that, I don't apply any strategy or know many strategies because I think it's too complicated for me to understand how the strategy will give a chance for me to win.
Once I tried to learn about the dice strategy, but I am too confuse to apply the word into the game, so I decide to leave the strategy in desktop, and I play without using a strategy.