Go to Facebook and sign in
Click your profile photo (top right)
Select Settings & privacy
Select Settings
Click Your Facebook information
Choose Deactivation and deletion
Select Delete account
Click Continue to account deletion
Enter your password
Click Continue
Choose a deletion option (if shown)
Click Delete account
Wait for the confirmation email (if prompted)
Open the deletion confirmation email and follow the link (if prompted)
Check that the account shows as scheduled for deletion