Just because something works for others doesn't mean it will work for you, and what works for you doesn't mean it will work for others. So you need to find by yourself what is good for you, and you do that by trying different games & strategies.

The game type, stakes & odds, styles, luck, and a bunch of other stuff are important. For more specific & detailed answers you need to ask a better questions. So here's just a little advice, try to focus on sports betting & poker! Good luck!