Sure, Hold on a sec, chainanalisys says your 0.051 bitcoin came from b1q...9oT a wallet used by cybercriminal X, we have decide to not accept your purchase, please provide a refund address so we can refund your 0.051 - fees of 3s/vb Thank you, you have been reported to authorities. 😊

You seem to be conflating anonymity with privacy. I don't know your bank account either. Do you think it's very private? Don't be stupid.