[Q] Xperia sp root without unlocked bootloader topic

Hello. Im new here.

I wanted to root my xperia sp via this video:

Code:

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https://www.youtube.com/watch?v=UYwIWy_mzNw

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But i did not wanted to unlock bootloader becouse of some error that happened during unlocking it (cant solve it). So i found rooting tutorial without unlocked bootloader. I did everything what was in video, now i have custom recovery TWRP and clockworkmod.

Also i have SuperSU and Xposed installer on my phone and some of my default apps are missing.

But here's a problem. Basically i don't have root. All of root checkers are saying that i havent got root and root apps dont work.

Also SuperSU is saying "there is no SU binary installed, and superSU cannot install it , this is a problem. if you just upgraded to android 4.3 , you need to manually re-root-consult the relevant forums for your device"

What should i do if i want to root my device properly ? Can anyone give me step by step tutorial or something so i cant brick my phone ? (Im really scared of bricking :D)

Hope you can help me :)