Cant resolve internal host names

[dvst8ion]

Installed Ubuntu 20.04LTS on and esxi server - picked port 41194 and have it port forwarded to the Ubuntu server 192.168.1.182 Ran the install script - changed DNS to 1.1.1.1 and 1.0.0.1 made sure public ip was filled in and not the internal private Made user - copied config output and made a new in my wireguard client on windows (different network)

I connect no issue - yay - i can ping everything on the 192.168.1.1/24 network (im on 192.168.10.1/24) I cannot ping the server by hostname however. Now I can ping by FQDN but I have software that runs that needs host name only.

How can I achieve this?