You can root your phone without pc using KINGROOT
(Use at your own risk, im not responsible for anything)
- Download and install kingroot on your device
- After installation completed you will be able to see the following icon in the menu , open it

Then Tap on The start root button to begin the root process
Now you can start rooting process
Wait a minute or 2 minutes you will be able to see the big green tick
which signifies that your device is rooted succesfully