I’ve been having trouble trying to figure out if I need to buy a router or not for my apartment. There is wifi and 1 ethernet port in the wall but I have 2 computers and a ps5 and like to do ethernet on all of them. When I tried plugging in the ethernet to my pc directly from the wall it says “ethernet doesn’t have a valid ip configuration”. But when I directly plug it into my ps5 it works great. I’ve tried a splitter with the same problems. Should I buy a router or am I out of luck?