hi, ChriizZ. welcome to chinaphonearena!
Auto root tools don't work with lollipop. I would suggest building CWM for your phone, then install SuperSU via recovery.
See this guide for building CWM while unrooted
[Only registered and activated users can see links Click here to register]
You can download the SuperSU zip file from here
[Only registered and activated users can see links Click here to register]
Actually, what you will get is a rar file. When you unpack that, you will get the zip file. There is no need to unpack the zip file. Just copy it to the root directory of your SD card.
Boot into recovery and choose to install zip from SD card. navigate to the zip file you copied and select it.
After it installs, boot into android and update binaries if necessary.
An alternative would be to flash a custom recovery for your phone if you already have one available. Be extra cautious with flashing. Only flash if your are 200% sure that the files you are using are correct.
good luck!