I'm not sure if this is where I'm supposed to ask, but any help would be greatly appreciated.

After trying out the service with Nord vpn and it is working out well, I tried using the VPN Kill Switch feature. It works well! However, ever since I've disconnected from the VPN (Yes, I did choose disconnect in the options)... I've been unable to connect to any internet services whatsoever.

I've tried:

Rebooting the computer

Closing out of the Nord vpn software

Reconnecting to the Nord VPN (Unable to succeed)

Turning off the option for VPN Internet Kill Switch (And saving it)

Forgetting the internet network and putting all of the details back in again

Reconnecting to a different internet network

Uninstalling and reinstalling the nord vpn

Any help is appreciated! Thank You!

Which distro?
Which desktop environment (or more specifically, are you creating connections with network-manager)?
Which software did you install, and how exactly?

Have you tried it via CLI? According to this page the following command should disable the killswitch:
You might need to be root when typing the command.

Which distro?

I found this service and its working fine for me now:
Mod removed redirect link