AMD Catalyst - Cant adjust brightness

Okay so I have installed Antergos on my laptop, I wanted something Arch based but easy to install, I could not be arsed to install Arch base lol.

Anyways I cant adjust the brightness with my function keys or anything in the system its self, I want to do this so I can get better battery life.

Any ideas?

Thanks

You'll need a key binding software.

Use Sxhkd or Xbindkeys

Sxhkd also requires amixerxorg-xbacklight, and xautomation

Xbindkeys requires amixer and xorg-xbacklight and xvkbd