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
ETA: THANK YOU GUYS FOR YOUR AWESOME HELP!!!
special thanks to InnerScientist and stuner for their approach but what worked was what IHave69XiBucks proposed.
This is interesting. I updated my laptop and had a network issue as well, but mine was different - it wanted to use dnsmasq, which I don’t need (being an end-point, not a server), and dnsmasq wasn’t picking up the dns from dhcp.
Solution turned out to be to disable dnsmasq using systemctl and reboot.