I see Roxanne Gay being recommended a couple times and wanted to give a heads up: I'm reading Hunger now and it is not an easy book for several reasons. It's good, but it's uncomfortable for a lot of it hitting close or close enough to home, if that makes sense. Also she does talk about her sexual assault in blunt detail, so trigger warning for that.
Between the World and Me by Ta-Nehisi Coates is a great one to read. It's not very long but is something I think everyone should read at some point in their lives.
I actually read a handful of novellas this year, but they were in the Dorothy Must Die series. That was an interesting series, and I enjoyed it, but I don't know that I...recommend it. It's not great? But they're fun in that the author is very creative.