email
I only do groups emails to people I know but not very often, and its on select mailing lists I have joined.
whats app I use one on one to people I know.
CC and other christian forums I use for fellowship.
Goodreads for books but I am only in one group.
Im not into any of the spam or sponsored advertising on any other social media platforms that just get sent to randoms or are clickbait. Anything I go on the ads will be blocked anyway. The only place I would want to go specifically to see advertising is trademe, but thats only if I am actually buying or selling something.