Facebook's ubiquitous chatting app, Messenger, has become so bloated that Facebook has already spun off a version for developing markets called "Messenger Lite". To install it in most countries, however, you'll have to sideload it on your Android phone.
https://www.notebookcheck.net/If-you-re-tired-of-Facebook-Messenger-s-bloat-try-Messenger-Lite.223448.0.html