I’m looking for a way to have a private method for Tap to Pay on GrapheneOS. Ideally I would like compatibility with privacy.com, and if possible have the option for Monero. I don’t mind going through an exhaustive setup process. What are my options?

Edit: The point of this is not for convenience, I am trying to avoid using my standard credit/debit card to provide privacy against my bank by using privacy.com or Monero when cash is unavailable.