I assume you're not American. Here everyone uses SMS by default. Failing that, everyone uses FB Messenger. Discord is used for gaming. That's about all the brea

I assume you're not American. Here everyone uses SMS by default. Failing that, everyone uses FB Messenger. Discord is used for gaming. That's about all the breadth you'll get outside of work. I guess I know three people who use Hangouts sometimes. Marco Polo and Snapchat are moderately popular things, though a bit different. Still, I have never met a single person who has used Whatsapp, Signal, Matrix, or Telegram. I doubt more than a handful have ever heard of any of them.