But no matter how you get the Bitcoin, you can get whatever degree of anonymity you want, by mixing it many times. You mix via Tor and nested VPN chains, with a different Whonix VM and mixing service for each mix.

From there, send your coins through a samouari whirlpool https://samouraiwallet.com/whirlpool

Then send them wherever you like.

There is still some counterparty risk (what if you're buying coins from the CIA, or whatever), but it's almost minimal.

Buying coins from a Bitcoin ATM is even easier, if there's one near you.