Selling stuff on platforms like Craigslist or Facebook Marketplace never turns out well since you have to actually interact with the buyers and meet them in person. You won't necessarily get contacted exclusively by potential buyers, some people have nothing better to do with their lives so they start randomly messaging people on this platform just to mess with them and waste their time.
The worst part about these platforms are the beggars, they completely ignore the price tag and go straight to begging to attempt to get the item for free. They're literally in a marketplace, begging shouldn't even cross their minds.