Port forwarding without global routing with OpenVPN

How can I use my VPNs port forwarding feature while also disabling global routing by adding “route-nopull” in the OpenVPN config? Using hide.me vpn

I found a relevant post, but the links to the anwsers don't work anymore: https://forum.netgate.com/topic/127557/openvpn-client-port-forwarding-route-nopull-issue