More I read, more I see that trading in a long term is not profitable. So, I wonder are there any profitable traders that make money on the market constantly and sustain decent lifestyle? I am not looking for big money, let's say 2k or 3k per month would be enough. Is this something doable? Is there any strategies to become a trader that makes this amount of money?
Trading is a zero-sum game. For you to make a profit, other players must suffer losses.
Why is investing usually a profitable human activity? Because investing is not a zero-sum game. It is logical to expect that any asset will increase in value over time (simply because of the existence of inflation).
In order to trade and make a profit, you need to have a competitive advantage over other players.
What is your competitive advantage? Are your competitors dumber and less educated than you? Do you have access to more advanced and powerful computers, allowing you to outpace your competitors in speed? Do you have access to unique insider information? The answers to these questions will help you understand whether you can make a profit from regular trading over a long period of time or not.
In trading, competitive advantage is everything.