Looking for the fun, olden times or modern times must reads (classic sort?)

HI! so this might be a weird request but i want books that are kind of like a must read..? like i know everyone has different preferences, but i feel like theres some of the very famous stuff in each genre. Like for example, I recently came across The villains series which is basically books about disney villains, and im intrigued and excited to start it. and so now im also looking for maybe the disney princesses versions?

In a way, some of the popular movies and shows that are actually originated from a book (and i want to read that book) !! or or something like hunger games in the dystopian genre, or percy jackson in the fantasy genre.

I, in general, love reading romance and often veer to romantasy, fantasy, and thrillers. but when ur reccomending, i wouldnt mind any genre!! (trying to read all genres so i can say i gave it a try haha)

sorry if this is too vague, but if any comes to mind, and why, let me know!!