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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 to judge the trend in the early stage. ?

In the era of bad technical indicators, can you still make money from technology?

More than 90% of the foreign exchange market is losing money, why don't you give up?

Seeking expert guidance, what is the difference between left-hand trading and right-hand trading?