So which premium VPN service you people are using or recommend to use?
I don't use VPN to access gambling site as it is just an over burden in terms of cost and speed but still i am eager to know the reason for using a VPN. Do you want to hide your identity while gambling

Hiding the identity is not the only reason users use VPN, there are game providers that are not available in their country, for example, I can't access hacksaw, pragmatic play, Isoftbet and many more because those providers' games are not available to my country so I need to use VPN to access them.
Exactly, especially Elk slot provider is now available to a few countries after the update on T&C.
Hiding Identity is not possible just by changing IP address, gambling platforms can analyze browser cookies and find the location with system time, AFAIK. It has happened before to some users and they were forced to pass KYC.