I do and for the most part all they seem to be is advertising for online crap.
I’ve found that these types of leagues are getting much stronger, at least in SE Wisconsin, over the last 18-24 months. Facebook has helped make them much more visible and easier to find.
Let the algorithm work for you. If you don’t follow any poker things on Facebook, start adding them. Locals will likely be following some of the same pages and the league games will start to be hand delivered to you.
Good luck! Hang onto your 4 and grow as you can. If you put together a good atmosphere, that will make people more likely to recruit for you too. And in the meantime, who can’t use a little practice their in short handed play?