Sett-home

It sounds like you unfortunately had a way worse time than you needed to with this. These were really the only settings you had to tinker with, the rest was in the Unraid command line, atleast for me, to tell tailscale what subnet ip ranges it needed to look for on the network the unraid device is on. In my case for example most of the devices I needed access to were on 192.168.1.0/24. If I wanted say, my network switch it might want to be 10.28.50.0/24 as well. And then log into my admin console in Tailscale to tell it to route those ips to everything in the tailnet. Granted I also use it as an exit node, so maybe it was a bit easier for me. But it was largely plug and play for me.