Need Help with some Strategy

Hello, greetings to all, I need help please, I play Bonoloto which is a 6/49 lottery, what happens to me is that I am doing something wrong, lately I cannot get a single correct number, it is true that since I have little money I only I play between 3 and 5 bets, but I would like if someone could tell me an efficient way to get tickets with at least 3 correct numbers and refine the chances of winning a prize. Right now I see it very far away. Well, thank you in advance and forgive my English, great software and great forum. Any idea is welcome.