The DXY, Where to HTF?

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?

Tell me how hard you have worked to make money in trading?

What is a perfect trading system? Or is there a so-called perfect trading system?

Why can you see the general direction right, but make a bad point in the transaction, and lose money instead?

A handful of bitter tears, I have been trading for five years, and I still lose money, what should I do?