Dice is the simple game AFAIK.
Martiangle is the way to earn quick profit but do not let it go because it will make you loss for long term ( I'm ever experience it too )
You can try high risk high reward method, sometimes it's better than martiangle and also faster !
You sure martiangle method works I have tried it only twice and haven't won anything.
And also why gamble in the first place when you know it risky and gambling with higher reward is even riskier , people simply want to lose there money
None strategy will work if we use it for a longer time. In gambling there are a bunch of variables that will determine our result. Luck, self control and money management are the three main variables. In this kind of game, I already met some people that got lucky but failed to control their self and ended with bad result.
I've also tried martingale strategy with dice because i git curious if it actually works and i lost aroind 0.04 btc that way. I don't know if i'm just doing it wrong but i think when it comes to dice there's really no sure way of winning. I agree with the three variables you've mentioned as these three would mainly determine if you're going to lose a lot of money. Among the three, self control and management i think are more important than luck