I have installed Ubuntu 20.10 on a dedicated SSD on my computer (Windows 10 is installed on another drive). But my network card (only ethernet, no wifi) is not detected and I cannot access internet. I have a Gigabyte B550 Aorus Pro which integrates a Realtek RTL8125 2.5Gb network card. The closest topic I could find is this Question for similar problem on Ubuntu server 20.04, i tried the proposed solutions but to no avail.
I have also tried installing Ubuntu 20.04 LTS with same results.
Is there something that I can do, or due to my "too recent" network card I can forget about Ubuntu supporting it?
Results of cat /etc/netplan.*yaml :
interfaces do not exist in /etc/network
Results of lshw -C network :
Results of ip a :



