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.

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I assumed you meant the whitelisting not the autodelete - cookie autodelete on close has been in FF for years, but some time recently they brought in whitelisting as well - go to settings, privacy and security, cookies and site data, manage exceptions

Might be worth deleting CAD and use the inbuilt option to reduce canvas fingerprinting

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