Here's an interesting, related link, that's very obviously coming from a certain perspective but still has things you can take [0].
Here are some strategies I use for books:
Go to the library and walk down a random shelf until a book calls to you. You can run your fingers down the spines and feel for the energy of the right book.
The opposite (however, somewhat sideways, rather than top-down) is pulling books from the "someone just returned this" section. And the books suggested by librarians.
I will also do full-text searches of my somewhat large library of ebooks, which gives equal weight to popular and unknown authors.
Randomness, with uncommon items weighted somewhat equal to common ones, and direct recommendations that bypass algorithmic feeds seem to work somewhat well for me as general strategies.
[0] https://www.epsilontheory.com/25-anti-mimetic-tactics-for-li...