If you want to delete your Facebook account for any reason then you can do it by using the following steps:
First you need to log into your Facebook account.
Then you can go this address https://www.facebook.com/help/delete_account?rdrhc
After that click on “OK“.
Now you will get a message that you need to wait for about 15 days. During these days you shouldn’t try to log into your Facebook account. If you do so then your Facebook account won’t be deleted.
In this way you can permanently delete a Facebook account.