What does the community think of coloring books? I have a couple of ideas but I like to hear from the community. What I'm looking at is something a bit different than the traditional type coloring books

I am excited to join this community. I have been publishing for about 8 months, but my book sales haven't been very good. I have spent several hundred dollars on Amazon ads and I have watched many hours of YouTube videos of gurus explaining the proper ways to structure my ads. My ACOS is horrible, about 258%! Then, as I scrolled through YouTube, I happened upon one of David's videos. I thought, "this is different," And then I thought, "this could well be the answer I'm looking for." Everything David said resonated with my experience. My Amazon ads weren't generating very many sales at all, but the one or two Tic Toc posts I made, did. So I began studying his content, and here I am. I'm looking forward to learning and applying the concepts I'm learning here to my business.