I somewhat agree with @Luseth, less is more sometimes. Which is probably why the WhatsApp and Discord chats do so well. Easy to use and takes no effort whatsoever. The forum is a good example of this on the website.
I think unless it benefits people they’re not going to use it, a good example of this is the events… it takes so much effort to get people to click one button because it does nothing for them.
I, as most others probably do, use FG as an archive and large discussions space. If you want to create more movement it needs to be a tool to either create discussion (competing with WhatsApp) or create/share content like videos or games/quizzes/competitions.