The ECB keeps three key interest rates. EU has mild and slow fluctuations

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?

Why is it so hard for an analyst to be the best trader?

Why do successful traders not advise others to trade?

Can retail investors make a lot of money by trading? How can I earn it?

How to do a practical Martin strategy with limited funds?

Can you do Martin strategy with limited trading funds? Any suggestions or ways to do it? I am a novice, and I want to try Martin's strategy with a small amount of money. I beg you to let me know!