VainGlory manual install, how?

Hi, I want to install Vain Glory with manual way, I have already downloaded the exe file to my laptop. But, I don’t know how to do that, please help me. I have tried many times, through setup section and then failed when install vc 2017 redist x86, I dont know what it is. Thank you for the help.

Why not use the installer?

Wasting time! Downloaded, installed, and game has quit!!!