Board Thread:Support Requests - Getting Technical/@comment-46758621-20200901180132/@comment-9605025-20200901183302

As you have probably figured out, the images are chosen by an automated system. Fandom has not shared the details of this system with users so no one here can give you a solution that is guaranteed to work. That said, if you haven't already done so, read this old blog which is the closest thing we have to documentation on how it works.