Craigslist is OK, Facebook Marketplace is better. Finding a loader that fits a certain tractor is kind of a rare thing, so be patient. When you find one there is a good chance the seller has had a hard time finding the tractor that fits his loader, too!
Hey, I see you're in Western PA. I am as well - Mercer County. Do you get the Area Shopper? Sometimes I see random loaders in there.