Why can't I root my phone?

[punchline]

I Cant Root My

...I Almost Like Try Every Method Of Rooting Phone..But Still Doesnot Have Any Goodnews...Some Of The Method That I Used Is Kingroot Android Application And Kingroot Computer Method...When I Using The Kingroot On My Phone...After Waiting To Root..It Say that I Should Try To Use Computer Method...And I Go To My Computer And Start Using The Method..The Kingroot In Computer It is In Chinese/Japan I Think..And I Cant Really Understand It...I Just Click The Blue Button Below Cause It Might Be A Button That I Need To Click To Root My Phone..So After Waiting For The App To Root My phone...It Give Me A Messenge in Orange Colour But Still In Chinese/Japan Language..But I Think That Might Be A Error...And After I Try To Use Root Genius..And Also Cant Root...Come On!!?? Why I Cant Root My Phone? Am I Do It Wrong? Pls Someone Help Me ...Sorry For The Bad English Guys I Already Try My Best