You believe in something unrealistic let me tell you that. Most of you come here and comment something that you don't know nothing about. If you know what is more profitable you would say so and there wouldn't be "if". If you have a good knowledge you could be what ever you want. People repeat that word knowledge, but where to find knowledge, where did you find it?
What is more profitable doesn't depend just from knowledge, there are many important factors from which depends someones success in trading, stock or crypto trading. More profitable is different for each person, which one is not so important as long as money is coming.
What is more accessible and simple we all know answer, its crypto trading, you need just Internet connection and phone or lap top, what ever you have and you are ready for trading and making money. To trade with stocks you need a broker and they have much more laws about stock trading.