DXY will rally again or remain consolidated

Fund management has always been a headache for me. May I ask you guys, how can I do a good job of position control?

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?

Traders, what moments do you feel "really broke"?

Why do successful traders not advise others to trade?

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