USA here. No we don't use WhatsApp at all. I communicate with all friends and family on Telegram or SMS. For work we use Slack. I refuse to have any Facebook anything installed on my phone (I don't use social media anyway....except for Lemmy now I guess if that counts haha)
I'm a proponent of breaking social media into two categories. There should be "personal media" or something where you use your real name and information, and some other name for social media that you use an alias. The fact Reddit/Lemmy are in the same category as Facebook seems dumb. We need a better way to describe it. Depending on how you define it, news sites with comment sections could be called social media if you wanted to, but it's clearly something different than Facebook.