Recently, I really enjoyed the scholomance trilogy by Naomi Novik. Had anti capitalist themes and cool world building. main character can be a little polaraizing though, she can be “b wordy” for lack of a better less misogynistic term coming to mind, I’ve seen some talk about how much they hated her character and others how much they loved her (I personally loved her)
as an aside, annas-archive.org is your friend for getting books for free!