How to expose jupyterhub , type=loadbalancer service using metallb on server's ip address

Question

1. I want to run a setup of jupyterhub and ngshare on a server with IP address 10.129.131.4

2. I ssh into the server and run the setup given here.

3. This is what I get on running the kubectl get all command. the only difference being the External-IP for proxy-public service was in pending state.

4. I can access the proxy-public service on the server via the url http://192.168.49.2:30824/hub/login, which I know is the ip address of the minikube and port of proxy-public.
   

5. Now I want to access the service proxy-public on something like 10.129.131.4:8686 (did not configure port in current setup), which is IP address of the server and a port on which I want it to access.

6. I thought of installing metallb and providing the IP address of server as the IP address pool in the configuration of metallb.

7. I installed metallb using the manifest file here and in the configuration file ipaddresspool.yaml I just entered the IP address of my server like below.

apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: first-pool
  namespace: metallb-system
spec:
  addresses:
  - 10.129.131.4-10.129.131.4

8. Now the output of kubectl get all is the one in image above and the External-IP for proxy-public service was the server's IP-address. as seen in the image.
9. Even now I cannot access the service on 10.129.131.4:30824 or 10.129.131.4:80
10. How do I get my service proxy-public of type loadbalancer on 10.129.131.4:80 also not just on 192.168.49.2:30824, is metallb even required for it?