Recovering Your Facebook Account
Go to facebook.com/login/identify and follow the instructions. Make sure to use a computer or mobile phone that you have previously used to log into your Facebook account.
Search for the account you want to recover. You can search for your account by name, email address, or phone number.
Follow the on-screen steps to reset the password for your account.
Recovering your Facebook Account From a Friend's or Family Member’s Account
From a computer, go to the profile of the account you'd like to recover.
Click the three dots below the cover photo.
Select Find support or report profile.
Choose Something Else, then click Next.
Click Recover this account and follow the steps.