Is financial trading a profession?

How to choose between opening a position through a breakthrough and opening a position with a pullback in trading?

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

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

How to understand the phrase "the simpler the trading system, the better"?

What is the degree of simplicity here? Or the simplicity here is not what I thought, just use a few indicators, so what do you think of this sentence?

How to effectively find the entry point?