In our experience, NordVPN is a good VPN for gambling because it is fast and secure, with a wide server network that makes it easy to access casinos in different countries.
When you next visit the site with a VPN, it will recognize that you have a different IP address and may then block you from using the site further.
If you visit the site without a VPN, it may record your IP address and location.
Make sure you use a VPN before your first visit to your gambling site of choice.