My mom was telling me that a relative in another state had said that her son encountered racist content on a game site called #Roblox (https://www.roblox.com/). I had to explain that it was most likely user-generated content and that most sites have a “report” capability for just such reasons. (I expect they probably have an extensive userbase, but a relatively small number of employees assigned to moderate. If true, the mods may never know about it until someone reports it.)