Seems like you have a better idea than I do about privacy so I’m probably not gonna be much help. However make sure that you use extensions that you trust or use as few permissions as possible because that also can be another vector where information can leak.

Oh and there was a post on here sometime ago about a website that show what kind of information it can get from your web browser so you could use that to check how much info you are leaking on the web at least.

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