Also see this article about Safari problems. Some of the solutions are mentioned above, but there is also information on why and how to use public DNS (domain name servers).
On a Mac since 1984. Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.
