[Hyprland] How do I dim my screen (Arch)?

I installed hyprland with prasanthrangan HyDE dotfiles, the last time I downloaded a linux distro it came with a brightness controller. I tried installing brightnessctl but it doesn't work for me. So, how do I control the brightness level of my screen, and how do I make a bind for it?

edit 1: guys i meant i'm new to using arch as my main distro, but i've already used other distros before and been using linux for a couple of years now

edit 2: I'm using a desktop with a nvidia gpu, so I tried using ddcutil like u/Fascinating_Destiny said, and it works! thx to everybody who tried to help :D

https://preview.redd.it/ye0yp49lg7ce1.png?width=1920&format=png&auto=webp&s=0507bce015ab2f488e43ec101f0e46d1adfa399d