I myself started making the same distinction when I talk about these things in English, except it's "social media" vs "social networks". Though I have no idea how to make that distinction in Russian, social "media" never caught on as a term there.

An extra annoying problem about social media for me is that while I can make most of the platforms give me a chronological feed of content authored only by people I follow, most other people see mine in an algorithmic feed. This includes people I have zero social connections with. For example, I just gave up trying to discuss politics on Twitter, because every time I post anything political, that tweet ends up in the feeds if hundreds of people who hold the radical version of opposite views, with predictable results. And there's nothing I can do. I can't opt out of being recommended.

Sure you can. You can not post political things on social networks. They're not doing any good anyway. They're not changing anyone's mind. They're not providing depth or width to the discussion. I don't say this to be insulting, but rather a realist.