Regolith Linux provides the best i3 experience with Ubuntu
The Regolith Linux provides an ideal i3 experience with Ubuntu. With a set of preconfigured shortcuts, and tools it makes the i3 friendly for majority of users.
The latest release of Regolith Desktop is available for Ubuntu 20.04 Focal Fossa. It can be installed either from a dedicated repository, or alternatively you can download a stand-alone ISO from project’s website and install a distribution with preconfigured regolith desktop.