Hi @guiui59 ,
Welcome to the forum!
Could you please put the output of the following terminal commands here?
rfkill list all
You can unblock any devices with rfkill unblock all
sudo dmesg | grep r8169
iw phy0 info
I also suggest you on trying to disable randomization on your wifi card. But first I have to see the outputs.
A useful post for this is the following: ‘IPV6 drops at random intervals - #2 by megavolt’
Hope this help, regards.