This article describes how to quit Facebook but keep using Messenger. We'll cover how to get Messenger back if you've already deactivated Facebook, and how to sign up for a new Messenger account if you don't have Facebook yet.
How to Use Facebook Messenger Without Facebook (2023)
If you've deactivated Facebook, you can continue using Messenger by logging into Messenger with your Facebook account details. This works on Messenger.com and within the Messenger app; simply enter your Facebook credentials and tap Log in.
Have you permanently deleted Facebook or never had a Facebook account? It’s easy to create a Messenger account because you automatically get one when you create a Facebook account. You can then disable Facebook and continue using Messenger. Here’s how:
Create a Facebook account. You can do this via the website, the Messenger app, or the Facebook app. Select Create new account and follow the steps on the screen.