Facebook has millions of users on a daily basis. Sometimes, users face an issue of Log out of messenger. if you are also facing the same issue, then you can simply sign out of a Facebook messenger using the Facebook application. We have shared complete instructions in a blog, that I am sharing with you.
Blog link: https://worldzo.net/log-out-of-facebook-messenger-on-android-iphone/
Go to Settings and Privacy. Then scroll down and go to Security and select Security and login. Now you'll see the list of devices where you are logged in. Select the Messenger session and click on Log out
Hope This Helps,
Peter