Running threads off IG has a good shot too.
As well as local area groups there are quite a few niche hobby groups on Facebook. I'm converting a van into a campervan and on Facebook there are groups specific to converting my van that have the same number of users as the whole vanlife subreddit.
The only thing I don't like is it is tied to my real name and friend circle... I see in my feed friends posts in groups I am not a member of, so I guess it does the same for me. In my recommendations was a BDSM group... Yeah not on Facebook :D
When I open Facebook, I don't see ranting family members. I see half a dozen groups and pages full of or operated by people I don't know.
Take time to prune and shape your network. Unfollow people / brands you have no interest, friend/follow those you do. Maybe join a group that matches your interests or local community groups.
Kind of like clutter in your house, taking time to clean up as your interests evolve, or to some extent undo sins of the past, can make for a better experience.
The last point is that they show you more of what you engage with. So if you want to see more friends and family, actively seek them out and engage and they'll start being more prominent.
Facebook Groups are very popular in the country I live. (Reddit is too American-centric to have ever really caught on.)
I'm in groups on legal stuff (19,000 members), boardgames (16,000 members), family stuff likes activities for kids (9,000 members), roadtrips (5,000 members), camping (9,000 members), food (41,000 members), dog lovers (14,000 members), and a general city group (150,000 members), a group for my neighborhood (22,000 members), a musicians network (3,300 members), pens (montblanc, etc; 8,800 members)
Most those groups are just for my city (i.e. the dog lovers is just for dog lovers in my city).
Perhaps the bad search was by design to show you as many posts as possible? Either way, it's worse than reddit search, which is saying something...
More so, as a seller... it gets far more leads than the other classifieds options around here. We've been casually selling berries and misc produce off our small farm on it, and it's kinda crazy how many people reach out for random $10 containers of red currants or fresh garlic scapes, etc.
(No one wants to have products shipped from scammy sellers, Facebook, please stop making that the default search option.)