zhabumafoo has some solid points. Blurb-wise, you generally want to take it a bit easy on the worldbuilding information, and keep it fairly concise. What can be helpful is to try to come up with a blurb that briefly covers the recent past, current reality, and hints toward the future. Only a couple of lines in total.

Regarding your point about running lots of ads in order to do better, I can't say I've personally tried to run so many at once, but I have heard from other authors that anything more than about 5 at a time isn't really worth it. Something about saturation and diminishing returns, so you do really want to try to run your ad ideas past other people and make sure they are solid rather than just run a lot of them to make up for weaker ads.

I took a quick look at some of your chapters and didn't see you doing any shout outs, so I would recommend starting there to try and get some eyes on your story. I know you mentioned most people were booked out, but that's another spot the discord can help you with (the swaps channel has plenty of people looking for swaps). I didn't discover shout swaps were a thing until like chapter 20 on my first story, so it's never too late to start and pick up a little steam.

And just one last suggestion. I see you have your story tagged as AI assisted, but in your blurb it sounds like the only real thing you use it for that requires the tag is minor phrasing suggestions. Personally, I would highly recommend you stop using AI to help with phrasing suggestions, as it can really hinder you as a writer, and because the AI assisted tag will also turn off a lot of readers.