[simosx]

Chromium is very complicated in terms of packaging, and packaging it as a deb package is too tough. Because when a new version appears, you need to do lots of work to get it updated quickly.

For Ubuntu 20.04, it has been explained (in 2019!) that Chromium will be only available as a snap package. To help users transition, the command `sudo apt install chromium-browser` would install the snap package. It is better than "package not found".

It is so simple, but if you are stuck in a negative sentiment on snaps (read this thread), you get crazy.