I don't know how one makes lots of profit in one day, it is like gambling, I think you don't need to make bet for every game.
Trading is not gambling, only those that enter trading with the gambling mindset lose a lot of money, If you must trade, one must learn about the rudiments, risk management and basic trading knowledge. There are so many rules to it that can be found in a lot of infos shared in different sections in this forum, just use the search button and right keyword