Get rid of "Invite to Messenger" forever
Unfortunately I doubt you can get rid of it because Facebook wants people to use their messaging platform.

I would try third party Facebook apps such as Face Slim, Tinfoil for Facebook, etc...  Don't trust them all however and do your research into the permissions they use.  I'd consider anything on F-Droid to be safe.  Or use your browser instead of an app to check it.

Of course you could also just delete Facebook.