With a VPN, your device's IP address and actual location are masked and replaced with one from your selected country. Once connected to a VPN, you can access sports betting, gambling, and fantasy sports sites as if you were in a different location.
If you want to access a geo-restricted betting website, you'll need to change your IP address to the respective country, which will allow access regardless of your location. For this purpose, I recommend ExpressVPN, but you can use CyberGhost and NordVPN with no issues as well.