GOOSE VPN works with protocols, among others: IKEv2 and OpenVPN. These protocols encrypt your data. What does this mean? If you visit a website via your own internet connection, your ISP (your internet provider, such as KPN, ZIGGO, T-Mobile, etc.) will see the websites you have visited. With a VPN connection, these websites are encrypted and encoded, so that your ISP can no longer see what you visit.
Read more about your privacy here.