There’s also the issue of being fingerprinted. An unfortunate truth of the internet is that most browser/device set ups are unique, and it makes it possible to track people that way. Having features like “do not track” turned on actually make you more unique, making it easier to confidently identify you when you visit sites. It probably doesn’t matter though, in my experience basically every web browser/computer is recognized as a unique user now (with maybe the exception of using a popular mobile browser on a popular mobile phone model).

Anyways, visit https://www.amiunique.org/ to have your hopes of being anonymous crushed.