Cant login to game center

Hello, A couple of years ago i created a game center account, back then we created apple id separeted from game center, and now when i tried to log in i need to log in with apple id, and i’ve tried all my mails and combinatilns, i wanna log in with my game center but i need to use apple id. And dont say log in with your apple id becouse i already did that and its another account. How should i log in with game center without apple id