how to unistall .deb compeltetly code example

Example 1: install ubuntu deb

#install downloaded .deb
sudo dpkg -i /path/name.deb

#install packages
sudo apt install package_name

Example 2: install *.deb file in ubuntu

Install a downloaded program in Ubuntu - Linux
sudo dpkg -i package_file.deb
//or
sudo apt install path_to_deb_file