Methods do work in gambling but after its been release to other gamblers then it will stop working. A friend of mine once have some methods in dice gambling and he used it for some days and forward it to me after which I also used it for two days, after the method was aborted and till now no method from him so far.
Is this for real, and on a dice game? Well, even if this, and based on your real experience, it is impossible for this to last. No wonder why it only lasted for a couple of days. Gambling sites will detect it sooner rather than later. They won't allow any method or strategy to beat the house edge. It will kill the industry.
Dice gambling, yes there is a way. I personally myself working on specific method and well it last for 2 months and ongoing. For the last sentence you should say: casino will cheat player if they win, is it correct? Every casino claim they are using provably fair system in which produce random results so that your strategy need to be random too thus making them unable to guess your next bet to cheat or alter the result. The correlation of two random sets (result vs your bets -- sides/odds/stake) yield a statistical data that can be predictable.
To beat the house edge, the most important thing is to figure out how to earn faster than the house edge, i.e: for 1% house edge, as long as you can earn 2% or more per wagered amount or 5% house edge need earning rate of 6% or more, profit will retain at the end regardless of how many bets/how long you've played.