How do I cancel a Google Cloud subscription?

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I want to remove my credit card from my Google account but I can't because it says a Google Cloud subscription is currently using it. So then I want to cancel the Google Cloud subscription but I have no idea where to do. I've tried to look it up on Google... but I still have no idea. I just don't want nothing to do with anything called Google Cloud.... I just want my credit card gone.

I'm sure this is not the place for these questions but I tried to look for somewhere to contact a Google Employee but the whole platform is just beyond annoying and complex.

If I could I would remove my google account completely but I do depend on the email address.