How to install and uninstallTor Browser in Ubuntu 18.04

tor.sh

##Istallation
#Install gtk and gtk3 module
sudo apt-get install libcanberra-gtk-module
sudo apt-get update

#Create a new repository file called tor.list 
#cat <<EOF | sudo tee /etc/apt/sources.list.d/tor.list
#deb https://deb.torproject.org/torproject.org bionic main
#deb-src https://deb.torproject.org/torproject.org bionic main
#EOF

#Download and import the repository PGP key to Ubuntu..
curl https://deb.torproject.org/torproject.org/A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89.asc | sudo gpg --import 
gpg --export A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89 | sudo apt-key add -

#Update and refresh Ubuntu apt package list, then install Tor browser…
sudo apt-get update
sudo apt-get install tor deb.torproject.org-keyring torbrowser-launcher

#Start the browser
torbrowser-launcher

##Unisntallation

#To remove just tor package
sudo apt-get remove tor

#Uninstall tor and it's dependent packages
sudo apt-get remove --auto-remove tor

#Purging tor (configuration and/or data files)
sudo apt-get purge tor

#delete configuration and/or data files and it's dependencies
sudo apt-get purge --auto-remove tor

dosen't work this command