Best place to shop used bikes?

I've used Craigslist since the start of my riding career in 2013 but it's really dried up the past year or so. I think much of the market has gone to Facebook but they don't have a motorcycle exclusive section or the filters like Craigslist has. Is there anywhere else to look or some way to refine my search in marketplace? via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/ffbwwo/best_place_to_shop_used_bikes/?utm_source=ifttt