Last one finished in 2020 was going to be Gamechanger by LX Beckett, and I made it about 220 pages. It's about humanity coming back from collapse, and combines AI and gaming and all sorts of pro-environment rules - and while it's fine, I am not interested in 400 pages more of it. I'd finish if there was ~150 more but the world isn't enjoyable enough for me to keep going. Instead I finished a totally casual one about a possible murder in a school for mages called Magic for Liars by Sarah Gailey. Turns out it was exactly the sort of quick read I was looking for, engaging without being too deep. The PI is non-magical and resentful of that fact; her sister teaches at the school. The PI not understanding magic means no real explanations on how all of the magic works, which I appreciated (though she implies she does understand so the people will trust her). And the school is a lot like any school.