In September 2021, Geoff published an AppImage for Linux which allows to work with Avogadro without interference with/dependency on package managers (without an installation) from the CLI by ./Avogadro2-x86_64.AppImage . Typically, the top bar of the frame is displayed initially, yet as soon as a tap with the mouse somewhere in the middle or lower third of the screen, the whole canvas of Avogadro becomes visible. Though this frozen version 1.95.1 might not include the latest bells and whistles, it is the one I run when reaching out for Avogadro in Debian 12/bookworm. You need about 81 MB of permanent storage for this executable.
May you report back if this one is working well enough for you?