crypto is essentially antithetical to privacy as all transactions are stored forever and bound to whatever KYC or service purchased. You are on the right track purchasing outside KYC as there are a few marketplaces of face to face sales or online versions thereof from jurisdictions who also don’t care about KYC. You would want to vary the merchant as you would spend not extending say a VPN service but creating a new account with each spend and then using this VPN as the inner nested service to a different VPN.
There are GC for crypto available at some gaming platforms but the fun there I have experienced rejection of cash prepaid credit cards. SUS. Then the crypto place itself upon GC processing sometimes requires “minimal” KYC of a mobile number. That’s also as egregious as a state ID card.
There are crypto remixers but someone else with that experience need weigh in as the risk starts about $220 USD.