What if I buy an account on a site for tumbler/mixing services with bitcoins included?
I think this will avoid exposure of my real identity.
Why don't you just try buy from the Currency Exchange on the Marketplace here? There are plenty of ways you can send money to people without revealing your identity. You can buy things like moneypacks or similar and use them to send to sellers in exchange for coins (not entirely sure what verification moneypacks require but there are certain ways you can buy cash codes etc without revealing your identity to send to people so look into that).