You can still make a profit by learning more about trading because the market will always change and won't be the same every day. And only people willing to learn more can improve their skills and expertise in trading to still make a profit.

But if they only copy what others do in trading, it will not always be useful for them because they will only rely on other people, while they will not always trade. That's why we learn more about trading so that we really understand how to analyze the market in all situations.