My house has no Ethernet ports.

I’m 21, just got a house. We love it, however— the only downside is that we have no Ethernet ports, I need a direct and fast connection that’s NOT stuffing my computer where our modem is (dining room), and having a long cable strung to my gaming room.

Any tips or ways to wire it, I’m used to just having ports everywhere but not having any Ethernet nor lan line connectivity is a change.