These traders for sure are just people who are thinking that trading is easy money or like a get-rich-quick scheme.
Strategy comes with work and time. You need to build your own strategy, practice it, and master it.

Capital preservation is the best also here because as long as you have the capital, you still can trade, and you can still apply your strategy.
That's why risk management strategy is important, like what OP explained with risk: reward ratio, that is working.