My main account cant be found

Hi, so this is my 2nd account and i cant login to my main account because it says ; “account not found” when i try to login with my main account’s email. I really need your help to find my account because i already bought
*Call of duty:Black ops 4 and *Overwatch
on it and i have been using that account for a year now. But it randomly just disappeared.
the account name is: DireRaven