What you can do is read a lot about different systems. But the question you have to ask yourself is how you want to make money from gambling. Do you really want to gamble properly and earn money purely on the basis of information and systems? Or do you want to go more into the gray area and keep yourself busy with things like arbitrage betting and relevant matters. And then of course I'm not even talking about matxhfixing. In principle, there is no watertight system that guarantees to always win money, those things do not exist, even though thousands of books have already been written about the casino.
Yeah that's right, we can still learn more on something that we are not yet known, more knowledge will give more insights that can help us to at least predict a game. People will sometimes will not do some research before anything they just bet on the teams they are supporting and only based on the player sometimes , but we can read some systems and explore other sports.