Yes, your ISP can actually track what websites you visit and how much time you spend online. They can store this data for a certain period of time and even share it with third parties if required by law. Therefore, to maintain their privacy, many people use a VPN, as it encrypts data and hides your real IP address. Using a VPN is a good way to protect your privacy. For example, it is good to know that a VPN can hide not only your traffic but also your real location.