Zorin OS PRO to Zorin OS Core when uninstalling python

I have Zorin OS 16 PRO but after uninstalling python to update to the latest version of python, the system rebooted and now I have Zorin OS 16 Core.
How do I return to PRO without losing my files?

note: already tried with
sudo apt install zorin-os-desktop-premium
and the terminal returns me:
E: Unable to locate package zorin-os-desktop-premium

I suspect you have two versions installed - ZOS 16 and ZOS17. If you can take a screenshot of your system drive using GPARTED to see how things are set up, maybe we can help.

image

Before removing python I had the pro version, now the core appears in the configuration

There is bad forum history of people removing python versions ending up in tears. It is OK to add new versions of python but would advise against removing old versions.