It's fairly unknown compared to her massive hit, The Hunger Games, but might I recommend Suzanne Collins' The Underland Chronicles?

I read the first book as a kid, maybe 7 or 8 years old, and read each book as it came along after. I revisited it in high school and then again in college. Even though it's targeted at a middle-grade audience, it is thought-provoking when read from an adult's pov. It is one I can go back to, and it's interesting, if you dig around, to read about Collins' influence at the time she wrote the first book.

It is my favorite series. I will die on a hill for it. From morally gray characters to characters and situations one might relate to, it has action and, might I say, a cool, not-super-special twist on a fantasy world (think Alice in Wonderland). The first book is a great introduction; the 2nd and 3rd books are so good, and the 4th and 5th books have strengths that help tie everything together. It tends to subtly (and sometimes not so subtly) lean into darker themes, but I believe that makes it so engaging besides the story itself. I read it with my students last year and we had great discussions about it.

Anyway, I hope you find a new book or series and maybe check out Gregor the Overlander (the first book)!

so unfortunately Mouse i'm not a big fantasy reader, but i am a big audiobook fan. do you have spotify? because i recently found a spotify playlist with free audiobooks! a lot of them are public domain books, but it's still a cool resource. if you don't have libby already, you def should download it. i listen to a loooooot of audiobooks that way. 

also i know jeff and his company is like legitimately evil, but audible is invaluable to me. she and i have a really toxic relationship, but she pulls me back in every time........ever since they added in the "plus catalogue", i've been using audible a lot more often. the plus catalogue are free books that come with your membership, and the selection, at least as far as my personal reading tastes go, has been great. i've been pleasantly surprised numerous times when i go to look up a book i can't get thru libby, only to find that it's free for me to read from audible. 

Still looking for recommendations. My platform of choice is Audible if that helps.