Yeah. Thinking about the platforms too. The people who use it. Most likely not going to want to improve. Not really. My proof, even with niche specific videos for specific audiences didn't matter. I think GDN/ YouTube ads are better in this situation like the user mentioned above (Phoenix Agency). I came to that conclusion last week. Just one more week of tweaking what maybe could help. Nothing. a 5.2% ctr collectively on my campaigns is great from my understanding in this niche. Especially since I'm not marketing magic pills or some stupid spray that "claims is better than steroids".
Final Conclusion for my Niche: Meta is better for cheap fast "stuff". Whatever your cheap fast stuff is. Regardless of Proof. People seeking information, like on YouTube, or using GDN will be better, just more expensive. To be clear I have only been marketing all of my free stuff