Sanguine is a boomer, he barely gets it but I think Freyja teaches him some basics EVENTUALLY.
Freyja and Sowilo both use social media a lot, each for their own purposes - Freyja for keeping up with happenings with her friends and others at Rhodes, Sowilo mostly uses it to consume content of the things he is interested in. Freyr uses it a lot less. He's one of those people with a default profile picture.