DEACTIVATE FACEBOOK MESSENGER
You can only deactivate Messenger if you previously deactivated your Facebook account.
To deactivate Messenger after you’ve deactivated your Facebook account:
Open Messenger
Tap your profile picture in the top left corner > Privacy & Terms > Deactivate Messenger
Enter your password and tap Continue
Tap Deactivate
To reactivate Messenger, log in with your username and password.
Note:
If