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I agree with you, not everything in trading always goes as expected, many people want to accept trading as their source of income in a hurry, but at that time they forget that trading is a field where there is profit, as well as the risk of loss, no one can ever achieve success from trading with certainty, because the market can change at any moment, so it can never be said for sure.
I have a neighbor who's older than me, he's involved in trading. I heard he's taken special courses that have given him considerable knowledge. Over time, the results have become apparent, whether it's profit or not, but his progress has been noticeable, to the point where he and his wife have built a fairly luxurious home. Later, I heard he bought a signal robot to make his trading more efficient. Despite this, he still works at a convenience store, even though it's also owned by his parents.
I believe trading shouldn't be a source of income, as it carries significant risks.