Only 1 Network connection in your office? Many walls between you and your WiFi connection?

Replace your single connection wall plate with a UniFi IW HD AP.
Not only will this expand your WiFi coverage into your office for better performance it will also add additional network jacks. All this and it simply replaces your old wall plate. No additional switches and power cables.

https://inwall-hd.ui.com/
https://www.amazon.ca/Ubiquiti-Networks-High-Density-Unifi