You won't be able to use Facebook Login for other apps you may have signed up for with your Facebook account, like Spotify or Pinterest. You may need to contact the apps and websites to recover those accounts. Some information, like messages you sent to friends, may still be visible to them after you delete your account.
Jan 29, 2020 How to completely delete your Facebook account, loose ends How to completely delete your Facebook account, loose ends and all. No matter your reason, deleting your Facebook account can be liberating. Here's what you need to know. How To Delete Facebook Data Forever | Time Jul 24, 2019
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Fed up? How to delete or deactivate your Facebook account
How can I delete my Facebook account and start afresh with Mar 17, 2016 Fed up? How to delete or deactivate your Facebook account Apr 16, 2018 How to Delete ALL Your Facebook Posts! - YouTube