[Q] How do I Root Samsung Galaxy S4? topic

I tried to root my Samsung Galaxy S4 today using towelroot but it never worked. It said my device was not supported :(**I spent the last hour - hour and a half looking on YouTube to find a tutorial on how to root my S4. All I found was tutorials for phones running 4.2.2 but I'm running 4.4.2. Are there any simple ways to root a Samsung Galaxy S4 running 4.4.2? By the way, I don't know if this will help but my model number is SGH-I337M.