XAUUSD still has a chance to Buy even though the price is high

Where should beginners start trading?

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?

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?

What cognitive biases do we have to overcome?

Do you think EA will be a market trend?