Important points before deleting gmail account

So I got this alt gmail account which I now want to delete. I m done with the deleted third-party accounts with other services which I can remember like Adobe or Spotify etc. What about the services which I don't remember? What can I do about them? And, is deleting my gmail account enough to stop thinking about all of the other services and stuff? The most I associated with the gmail account was my name. No address, no phone …

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