Bisq.network. no id required. Though if I were you, I would not be buying Bitcoin since it's perfectly traceable at all times into the future. Monero on the other hand is not.
You can do what you want of course, but it is really a bad idea. Because if somebody does something with Bitcoin that you sell them any time in the future, it could very well come back on you. If you don't believe me, look up the case of Bitcoin Fog.