If you want to know the professional trader from the confused trader who trades randomly.
The professional trader knows how to identify bottom areas and can read financial and fundamental indicators, and understands that market timing is impossible and buys in batches even if the stock drops.
The confused random trader:
Does not know how to read financial indicators.
Places stop-loss orders even if the stock is at bottom areas.
Does not buy until the stock has risen 10% or more from its bottom because his buy and sell signals are based on illogical data.
Therefore, you find that most of this group lives in delusion and confusion, and they do not understand the market and cannot understand it even if they have been trading for 100 years. The essence of experience is the correct learning along with long experience, so a long duration of years is not sufficient without proper knowledge.