Here are the results of network diagnostics
Please find the attachment Test.jpg

And also tried port forwarding but lack of knowledge the port number 16000 still shows to be closed on nmap
Also please find the attachment Connect.jpg

And verification screenshot of nmap is also attached PFA nmap.jpg

I also tried passing Inbound Rule for 16000 port on name Webserver in the windows firewall with advanced settings. PFA

Are you using a stable internet connection e. g. Fibre, Cable, DSL or are you trying to play using a hotspot or a 4G / 5G data connection?

Fiber Net (Airtel Xstream) Stable Internet. Monthly connection.

PFA

Is there any solution for port forwarding?

Aah, thanks I used an VPN and it works fine now

I can help you setting up the correct port forwarding rule. Please take a screenshot of the existing port forwarding rule or show me a screenshot of the gaps you have to fill out, when adding a new port forwarding rule in your router.

It's not recommended using a VPN as this may results into shared bans when cheaters try to evade their ban.

ok, you mean the gaps I needed to fill in the router configuration settings?

These are the gaps I needed to fill to pass the rule. PFA

External Port: 16000 UDP
Internal Port: 16000 UDP
Internal Server: IP address of your local computer (Start > Run > cmd > ipconfig)
Mapping Name: Voobly

Now run the network diagnostics again and see whether you get a positive result.

Done. But still it is the same lack of connection . PFA