How to install i3 desktop on Kali Linux?

I ran these scripts and I’m getting a “no such file or directory” error because the /usr/bin directory doesn’t exist in the repo, meaning they don’t provide executable scripts.

Copy dotfiles to your $HOME directory:
rsync -a “$PWD”/dotfiles/etc/skel/ “$HOME”/

Copy dotfiles to /etc/skel/:
rsync -a “$PWD”/dotfiles/etc/skel/ /etc/skel/

Copy dotfiles to /root/:
rsync -a “$PWD”/dotfiles/etc/skel/ /root/

Copy scripts to /usr/bin/:
rsync -a “$PWD”/dotfiles/usr/bin/ /usr/bin/

The first 3 commands run smoothly and copy the files to the correct locations, but when I boot the system, i3 still starts in its default state. It boots without using the copied dotfiles.