After a fresh install make sure to update to the latest and greatest:

sudo apt update
sudo apt upgrade

Install Pimp My Kali

cd /opt
sudo git clone https://github.com/Dewalt-arch/pimpmykali
cd pimpmykali
sudo ./pimpmykali.sh
For a new kali vm, run menu option N

Install Foxy Proxy for Firefox

https://addons.mozilla.org/en-US/firefox/addon/foxyproxy-standard/