Use a vpn with a Eu server. More sites like google will show a cookie popup with the “reject all cookies” option.
Reject all cookies if it exists. Otherwise accept cookies and then click on the :
shield icon > cookies and site data > delete (trash icon)
This is super useful when you want to read an article on some news website and it shows a cookie popup.
If you are using Firefox based browser get Consent-o-matic. It will actively opt you out of cookie windows instead of hiding them like others do.
Just note that using extensions can make you vulnerable to fingerprinting.
As is everything you do. Screen size, orientation, languages, browser, browser version, even battery level until recently.
But the more the worse
which is why tor is the answer. it blocks out these fingerprints and is consistent between others. unless you are using something like octobrowser maybe?
But the more the worse
Ironic.