Note that "I agree to tracking" and "I agree to cookies" are two different things. If you agree to tracking then a website can fingerprint you in any way they see fit, including methods that do not depend on cookies.

This is what Brave's "Forgetful Browsing" does. There's even a slight delay, in case you accidentally closed the tab.

You can configure the "Cookie Autodelete" extension to behave in a similar way.

This is what the extension Cookie Autodelete does. It even allows you to make an exclusion list of ones you wish to persist.

this means they track you for your duration. ideal solution is accept all cookies and randomly modify the values so it becomes a jumbled mess to their analytics

this is called incognito mode