As someone who has moved to the middle east (from the bay area), a large portion of this society heavily relies on Facebook, particularly for FB groups and also FB marketplace. Aside from that, this entire society basically functions on Instagram for any news / personal connections, but as it relates to Facebook, having groups is a great way to connect with people and ask questions and since we don't really have a good alternative to Craigslist here, FB marketplace fills that void.

That said, I'm sure people here use Facebook for other reasons, but anecdotally, this is what I'm seeing. Instagram and Facebook aside, the most used app I've found here is WhatsApp, so the society here is deeply integrated into the Facebook web of services