Sudo: add-apt-repository: command not found
Hi! im trying to get wow on lutis to work. and so far i have been able to launch it, but the performance is bad. and it seems like i need to install some vulkan support and such. however the command to install them gives me the above error. Im sure im just missing something "obvious" but i am very confused and would love some help 
command that i am trying to run "sudo add-apt-repository ppa:graphics-drivers/ppa && sudo dpkg --add-architecture i386 && sudo apt update && sudo apt install -y nvidia-driver-535 libvulkan1 libvulkan1:i386"
command that i am trying to run "sudo add-apt-repository ppa:graphics-drivers/ppa && sudo dpkg --add-architecture i386 && sudo apt update && sudo apt install -y nvidia-driver-535 libvulkan1 libvulkan1:i386"
