I wonder, excuse me if I'm pedantic and a pain in the ass, but how can you become a professional player when what helps you in the game is also luck.
This thing drives me crazy, it's like saying you're a bingo or lottery professional. You simply can't, when luck is involved in the game.
Being a professional does not mean that a gambler always wins or is always lucky with every bet. The same goes for professional traders; they do not always profit either. However, they do have self-control and good experience to minimize the risk of larger losses. There is no exact measure for you to be considered a professional gambler. Although you still face risks and rely on luck in betting, you can become wiser in managing your bets and build your own professionalism.