I played in many websites and most of my friends tried as well but didn't had much luck but I would love to hear your story in this thread.
This is what most gamblers are sharing about their experience. They will simply blame their luck factor for not being successful while gambling. I am sure they will not be successful even there will be no house edge. Because gambling requires you to be more careful and conscious while gambling but most gamblers are taking it light like their usual entertainment thing and missing out core steps which are essential for being profitable.
For example, I played dicing with x3 multiplier and along with Martingale strategy. My plan was switching back to x2 multiplier if I happen to face 5 consecutive losses. And when I faced 5 losses in streak, I remembered my plan to change multiplier to X2 but I accidentally forget to double my bet as per martingale. My 6th bet was green still I failed to recover my losses even I played as per martingale. A simple mistake still I deserve it because I was not careful enough.