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 usually just walk around the bookstore picking out books at random and reading the synopses until i find something interesting. Sometimes it’s social media. My favourite book series of all time, Harry Potter, was recommended to me by my second grade English teacher.