Working root method for Alcatel OT Pixi7 l213? I Want to root my Alcatel OneTouch Pixi 7 (l213). Android 4.4.2

I tried adb manual from linux terminal, but stopped at "readonly partition"
I have not sufficient knowledge and no actual clear instructions.

Kingroot failed at about 70%, without any error messages.

Any idea or link to insruction highly welcome
Have you tried KingRoot, you can download it from their website? Not 100% guaranteed but supports the most phones. Also you could try SuperSU's Update.zip too.