Automatically unbind STEAM

Hello, customer service. I am a user with the EA account name SaGe_Ninja. Since binding my STEAM account, I have been playing APEX using my STEAM account. However, recently, when I logged into the game, I was suddenly prompted to bind my EA account. But since I haven't used it for a long time, I have forgotten the email address I used to register with. Could you please provide me with the email address associated with this account? Thank you very much.