You can only deactivate Messenger if you previously deactivated your Facebook account. To deactivate Messenger after you've deactivated your Facebook account: iPhone and iPad:

You'll no longer be able to use Facebook Messenger. 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 [2020 Update] How to Delete Facebook But Keep Messenger Many people are sharing their lifes on Facebook everyday, and you might get so many post notifications. Sometimes you feel like all these updated posts lead to information overload, and result in missing important messages. How to Delete Your Facebook Account

Messenger Instantly connect with people in your life. Sign in with Facebook to get started. Continue

Tap and hold any of the desired conversations to find the option to delete it. If you want to delete a particular message, head into the conversation and then tap and hold the exact message which you want to delete as shown in the image below. How to (Permanently) Delete Facebook Messages On iPhone. Deleting a conversation or a message is the How to remove a person from Facebook Messenger (Updated

How to delete suggested people on Messenger - Quora

May 19, 2020