I have follow that Installation Guide https://www.home-assistant.io/docs/installation/raspberry-pi/ and now after some Days of Pain i know that this guide is rubbish and install only a light version that maybe can not upgraded! I cant find a way to install that Node Red Addon.
This guide is definitely not rubbish, it’s just an alternative installation method that doesn’t fit your needs. This is an installation in a virtual environment and can for sure be upgraded.
If you want to have add-ons, follow the guide that Hellis posted, which will install Home Assistant OS. It’s the first thing you get when you follow the docs, I don’t know how you arrived at the link for the venv installation, maybe google?