I need to debug an Odoo instance installed on Ubuntu 20.04 using package installer.

Currently I'm using VS Code with SSH plugin to connect to the server.

I saw some not too detailed instructions for example here:

https://odoo-development.readthedocs.io/en/latest/ide/visual-studio-code/debugging.html

But I'm not able to even find location of odoo.py file.

And ideas how can I do this?