How to build a reliable trend trading system? Let's discuss

How to explain leverage in the forex market?

My usual trading system continues to fail, what should I do?

If a trading system built by myself often fails and causes losses, should I abandon this system and replace it with another one? Is there a stable and profitable trading system?

How can one be called a qualified trader?

What kind of system can accurately locate support resistance and trend when doing transactions?

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