How to Completely Delete Facebook and Every of your Saved datas Parmanently

 It's more difficult than you think to erase yourself permanently. With facebooks' privacy policies, becoming Facebook-free requires more steps than just hitting the delete button and saying goodbye.
Keep in mind deletion is not the same as deactivation. You can deactivate your account at any time, which means your Timeline and information will disappear from Facebook until you reactivate your account. When reactivated, your information is restored.
Deleting your account means you can never, ever access your account again, and you won't be able to retrieve any of your content or information.
Unless you’re absolutely sure you want to get rid of your Facebook account once and for all, we’d recommend going down the deactivation route.
Deleting your account is a major step, so think it through before committing. Facebook can take up to 90 days to process account deletion requests, but once your account's gone, it’s gone.
Before taking the plunge, it’s well worth downloading a copy of the data Facebook has on you.
If you 100% want out, follow the step-by-step guide below to erase your Facebook footprint and make sure your account is gone for good. 

1. Get all your Data / information

We recommend downloading a copy of your Facebook data, which comes in the form of a ZIP file consisting of all your posts, including photos and videos. Here's how:
    Click on the padlock icon at the upper right-hand corner of your Facebook.
    Select "See More Settings."
    Click “General,” the first option in the menu.
    Click “Download a copy of your Facebook data.”
    Finish by clicking “Start My Archive.”
Once the ZIP file has downloaded, save it in a safe place on your computer or hard drive.

2.  Check all Application Linked to your Facebook

Here's how to check the apps connected to your Facebook account:
    Click the downward arrow at the top right-hand corner of Facebook.
    Select "Settings."
    Click "Apps" in the left-hand column.

3. Switch Off every app Connected to Your Facebook Account 

    Click the downward arrow at the top right-hand corner of Facebook.
    Click "Settings."
    Select "Apps" in the left-hand column.
    Remove each app on the list by clicking the "x" next to it.
    A pop-up will ask you to confirm the removal of the app. Check off "Delete all your [app name] activity on Facebook. This may take a few minutes." Now, hit the "Remove" button.
    Then, click "Edit" (this is to the right of "Use apps, plugins, games and websites on Facebook and elsewhere?")
    Click "Turn Off Platform."

4.  Clear you Facebook history and Other related

open your "Activity Log" page to wipe out your trail of actions on Facebook. These actions include posts you've liked and comments you've made in the past. Doing this will ensure that little to no information remains after your account is deleted.
    Go to your Facebook profile page, and click the "View Activity Log" button on the lower right-hand corner of your cover photo.
    Undo all of your actions by clicking on the pencil icon of each action. Select "Delete" or "Unlike."

 5. Finally Delete your Facebook account without Stress

click the "Delete My Account" button. After you have confirmed that you want to delete your account, check your email to make sure the deletion process has started. If you don't see it, check your junk folder.
Make sure to avoid logging into your Facebook account for 14 days. If you login during this two week period, your account will be restored.
According to Facebook's Data Use Policy, it takes about one month to delete your account, but some information may remain in backup copies for up to 90 days on Facebook's end.

I hope this information has really helped you to some extent .. remember to share with your friends