I want Facebook to pick the best 20 items to show me every single time I refresh that screen.
On mobile, make sure Facebook's app can know where you are. That not only makes features like Nearby Friends possible but also makes your feed have a few items from your location.
Facebook is teachable. If you hide items, you'll see fewer of those kinds of items in the future. Like more items, and you'll see more of those in the future.