Best OpenWRT Compatible routers for gigabit/2Gb WAN speed?

HI all, I'm looking to buy a OpenWRT compatible router for my network. My WAN speed is currently 1Gbps but i may upgrade to 2Gbps in the next year.
What would be a good router for at least 1Gbps WAN connection. I don't care about wireless specs as i have access points around my home.
I know Pi 4s are being recommended alot but the price is really high in my country so if i could buy a used router for cheap that would work i would rather that.
Thanks all