3. Acquire bitcoin from friends and customers. --> or buy from P2P Trading Platforms, Exchanges want to know you are!
The most anonymous way to acquire bitcoin is to buy it from a stranger, in person, for cash. However, this may be dangerous.
Instead, try to buy bitcoin from a friend. Alternatively, try to earn bitcoin by selling goods or services for it.
Any regulated exchange will want to know who you are, and other details about you. This is ok, because you can coin-join coins that come from an exchange.
I don't think buying from a stranger is safe! Instead of buying from a stranger or at a P2P trading platform (which is not safe), we can trade at decentralized exchanges that support trading anonymously. You can trade at exchanges and hold the coins in your wallet, which would be safe.