I edited the new debian.sources file in /etc/apt/sources.list.d according to debian instructions, started to upgrade and successfuly upgraded to 13.0, at least core debian (can use mpv, vlc, thunar, libreoffice…)

Problem is, this notebook with debian 13.0 doesnt have a working network manager and there are still 900 packages that need upgrading.

The command I entered in the terminal: sudo systemctl status networkmanager.service returns: unit networkmanager.service could not be found.

I have an android phone I thought I could use as a network hotspot or maybe tether, but debian 13.0 doesnt recognize it, so I really dont know what to do

Lan cable didnt work either.

Help appreciated