Was rather shocked to find BT hubs don’t allow you to change DNS servers anymore and force you to use their own ones, so I can’t properly setup adguard.
What routers are people using now that are reliable and will let me control my own network configuration
That might be the way to do it. I’m somewhat unfamiliar with networking, what does DHCP do?
DHCP strands for dynamic host control protocol. It is a server that assigns dynamic IP addresses to devices on the network which request it.