Is financial trading a profession?

If you want to make money in trading, what principles do you need to understand?

Do you feel lonely doing business?

Watching trends and doing analysis until late at night, no one cares about losses, no one applauds profits, good or bad, only you know, are you lonely? Do you enjoy solitude?

As a trader, how can you make a stable profit?

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

In trading, how to solve the problem of being hit by the market back and forth with stop loss? What is the basis for the solution?