Has anyone even found an actually working method here?

In general, all these "How to get rich" are scammy. Think about it, you have all these people that found a magic method to get rich but instead of using it themselves (they say they are already too rich), they decided to share it with the world... for a fee. Their solution to get rich is actually to do so from people willing to pay for their their claimed solution to get rich.

A second method is when they want to convince you for trading with your money, so you earn or lose your money, but they receive a fee.
You can do the same with lottery: you pay me and I'll buy you the ticket. If you win, I will transfer you the money, but keep a 10% fee. Would you lke that?