No. The Najdorf is about the most theory heavy opening there is, akin to the Ruy Lopez and maybe French Defense.
https://www.chess.com/forum/view/chess-openings/what-is-whites-plan-in-the-najdorf
At club level, the Najdorf can often be played without knowing much theory, relying mainly on ideas and concepts.
If you're looking for a Sicilian with less theory, you need to go Taimanov or the Kan. I like the Taimanov. The Kan is a little cramped unless you like Hedgehog-like positions.