I just started on FB and am still learning but the first thing I did was lock down the ability to post anything. And when posting is allowed, there is a way to pre-approve before it hits the page.
I don’t know how to do this yet but there is a coffee shop I follow that somehow has their FB set to update their Google reviews. So when they get a 5* on Google, it shows up as “you got a review!” and posts it on FB.
Now if only I could learn how to get a public calendar for events running for guests …
Hope this helps!