I block almost all 3rd party cookies, but at this point isn't it kind of nice to just have your google login follow you around, so you don't constantly have to login on other sites? Sure, it sucks for privacy, which is why your google account should never be tied to your phone number or your actual identity, but it's super convenient. Oh wait. It's tied to your real identity? Go back to square one and start a fake identity with all the root info. Buy a burner with a prepaid card, use it to set up a yahoo mail account, use that to set up a mail server you pay for in bitcoin, use that to verify a gmail account, and never let down your VPN. You're going to be tracked; the right move isn't to waste time worrying about that, it's to be someone invisible and untethered in the real world.