There are different methods to root an Android device.
Method 1: use app
There are Android apps that allow to root your device just by installing, running it and swapping a slider.
Cross your fingers so any of these apps support your device, as it is the easiest way.
Some popular apps are Towelroot or Kingroot.
Method 2: run toolkit
Files no longer downloadable (o bytes)
Method 3: install SuperSU
This app is no longer available in Play Store.
Download SuperSU from APKMirror
Download SuperSU 2.82.1 (latest to this post’s date) from APKMirror
2. Install and run custom recovery
Read this post.
3. Copy SuperSU
Run this command from terminal
./adb push /Users/pablo/Downloads/UPDATE-SuperSU-v1.04.zip /sdcard/UPDATE-SuperSU-v1.04.zip
Volume , recovery mode
You should see ClockworkMod Recovery
Tap install zip from sdcard
Tap choose zip from sdcard
Tap 0 to access the /sdcard area
Reboot your mobile device.
I got to install it, but once I started mobile SuperSU app crashes easily.