First of all, you need to figure out which genre you're into. Are you interested in adventures, magic or real-life problems?
I'm into contemporary stories(both dark and fluffy), magical realism, really dark thrillers and sci-fi. Here are some of my favorites in each genre
contemp: Jellicoe Road, The Storyteller, Anna and the French Kiss, Stolen, Afterworlds
magical realism: The Diviners, Every Day, The Raven Cycle, Shades of Magic, Vicious
thrillers: Dangerous Girls, The Female of the Species, The Naturals series, Mara Dyer series
sci-fi: Red Rising, The Illuminae Files, The Bone Season
Even though I love all these genres, my favorite book is Unravel Me by Tahereh Mafi. It's the second book in the Shatter Me trilogy which is a dystopian (very romanticized) version of X-Men.
These are just my preferences. My suggestion is-check out this Goodreads link:
https://www.goodreads.com/genres/young-adult I think you'll be able to find awesome books there. Take it slow. Read a bunch of different genres until you find what works for you.