A Book series you read and loved all the way through?

I read a lot of standalone books and want to enjoy a longer series of books (3+).

Not into self help, super sad books, really high fantasy, or cheesy romances.

Books I gave 5⭐️: Piranesi, Unwind series, Book of the Unnamed Midwife, House on the Cerulean Sea, the Wishing Game, the Guncle, the Snow Child, Addie Larue, Dark Matter