Social media (goodreads/tiktok/reddit)? Colleagues? Friends? Browsing the library/bookstore? Asking for recommendations from staff at libraries/bookstores?
BONUS: if you can remember, how did you find books you really enjoyed?
I realized a lot of my favorite book recs came from reddit. I was a subscriber of r/books and picked up some really good books there. Piranesi by Susanna Clarke is an example.
I used to lurk /r/printsf and /r/weirdlit, and note down anything that sounded interesting. I also sometimes look at award winners + nominations. I guess I’ll have to make more of an effort now.