How do you know this is a fraud ‘ring’ ?

Scammy sellers asking thousands of dollars for something like a common as muck $2 coin have been around since eBay stated, as are the buyers who happily support such scams

Are the listings you are trying to report active/current or ended?

Are you on the app or the real site

Why can’t you contact eBay?  eBay help is at the top of every page