In Dice problem is that you can win 10%, 20% or even 50%, but then you loose. In fact it is not real to make 100% profit. Dice site owners make profit and that's all. 
of course, is the whole idea of any casino game. (owners making profit)
Yes! that is the entire concept of a casino (take your money) dice is a easy way to get both new and lazy gamblers
trap.
Heres my profit today from Just-Dice,
https://imgur.com/UVyWqPJ
can you teach others?
it's mostly just about being lucky and taking breaks when you start seeing a loss streak. I change it up often, i ended up cashing out 0.98btc worth of clam coin today, it's actually on poloniex for sell as we speak.
I don't mind to share my ways, but theres nothing special, two times todayi was on all in bets of 100+