Hi there
There's quite a large global typewriter community on Instagram. You'll find if you follow one or two, then many others will get recommended. I share the reservations about Facebook but Instagram probably has the most comprehensive platform for this kind of interest?
It's difficult to spot members of this forum, as people tend to use different identifiers. I've been using it for a month so far as #typewritercellar. Some people post regularly and, as Uwe suggests, often present their collections in photogenic settings. Have a look at #typewritertraveler for example. The postings by #charliefoxtrotvintage, from here in the UK, are also well presented.
As you might expect, the most numerous postings are from USA/Canada but it attracts global postings.
Hope this helps.
Ian J