To install Chromium on Ubuntu 18.04 LTS and above, just open the Ubuntu Software tool and search for 'Chromium'. Click on the app listing then the install button. From here just hit “install”, enter your password (if prompted) and that's pretty much it — hey: I did say it was easy!
How to install Chromium browser on Ubuntu 22?
You can install chromium browser on Ubuntu 22.04 either using the Apt package or the Snap package. When using the apt package, simply use the $ sudo apt install chromium-browser -y command, whereas, in the case of Snap first install the package, then use this command $ sudo snap install chromium to install chromium.