I tried different methods, I already tried using Powerline Adapter but I had network outages all the time. I tried to use a Wi-Fi router like GL.inet MT3000, I used it to connect Wi-Fi on my PC without internet from ISP, but apparently it doesn't work, I also tried to use the USB tethering mode of my pixel under GrapheneOS on my PC, it works but I have to use the MT3000 Wi-Fi on my pixel. Finally, I used the mesh router like orbi, it works well but unfortunately they have the gigabit ethernet port, not 2.5 gbps.
My goal is to use a 2.5 Gbps Ethernet port on my PC with a 2.5 Gbps USB Ethernet adapter but I can't find a solution. I would also like to have an open-source router if possible
(When I say my PC, I mean my desktop PC, not laptop)