How to save your data before deleting Facebook account?

There are possible ways on how to retrieve those deleted Facebook Albums. In times like this, you need a professional program to help you get those important conversations back. The easiest and fastest way to retrieve those deleted Facebook Albums is through third-party software. FoneDog - iOS Data Recovery is the world's leading iOS recovery program that has helped millions of users around the globe. It has the highest retrieval rate in the industry and works with all iOS devices such as iPhone, iPad and iPod Touch. To begin the deleted Facebook Albums recovery, follow the simple steps below:
Option 1.The three-party application for restoring deleted messages
Step1. Run FoneDog - iOS Data Recovery after download and installation

Step2. Click "Recover from iOS Device" from the left-side panel tool options
Step3. Scan and Recover Facebook messages from iPhone Completely
More refer:
How Do You Retrieve Accidentally Deleted Text Messages from iPhone 7 or iCloud Backup
How to Recover Deleted Viber Messages from iPhone 7/ 7 Plus
Hope it can help you sooner

You can delete your Facebook account from account setting section.
Thanks
Borhan

Hello and Welcome!

To delete yourself from Facebook, Deactivate your account.
First login your account then on your homepage, on extreme right side, Click on "Account". Drop down will open then click in "Account settings". Page will open , on it last option will be "Deactivate account". Click on it. Your account will be deactivate

I hope this solution helps you
Let me know if you want further assistance
Thank You for Using FixYa!

There is a way of recovering deleted facebook messages.
In order to recover a facebook conversation:
You must receive email notifications from facebook, telling you when someone sent you a message. Ex. Paul Wilson sent you a message on facebook
Click on that link.. If you have already deleted the notification, go to your deleted messages inbox (hotmail)..
(It's impossible to completely remove something from a computer!)
At the bottom of the message, you will see a link, click on the link that says :
To reply to this message, follow the link below :
ex. http://www.facebook.com/inbox.php?lh=0e5633de8d92e7fab7145ffc710260dc&
then click on : SHOW DELETED THREAD.
Done!