What dry goods to share?

Why do we still fail to trade after learning so many trading indicators?

How to understand the phrase "the simpler the trading system, the better"?

What is the degree of simplicity here? Or the simplicity here is not what I thought, just use a few indicators, so what do you think of this sentence?

Are you happy doing business?

There is no such question, so I mention it.

Do you guys have any good suggestions to save novice Huiyou like me from taking some detours?

Winning ratio and profit-loss ratio, which one do you value more?