nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqlw3cmn53e84sc776rmhapa24wfk3jglqtl6p3hd6dhxruxrhhtrsmjcjhw how the fuck do I buy Monero without giving some exchange my credit card details and without needing to buy BTC/ETH firstBuy BTC from a Bitcoin ATM (with a hoodie on and perfect opsec 😆) - > Exchange at a DEX for XMR. (Bisq also supports other payments) would be the easiest IMO.
Never really got in to mining, but I think you'd still want to use the most powerful (&efficient) machine you have rather than multiple SBCs but could be wrong 🤷♂️