The definition of probability

What should I do if my trading system encounters a retracement?

I have been unable to set the stop loss in the transaction, how can I do a good stop loss?

How do you view the theory that review is useless?

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

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?