What's the safest way to move into Bitcoin privately?

I'm looking to transition some holdings into Bitcoin using a method that emphasizes privacy and self-custody. I prefer to avoid centralized exchanges that require identification and want to keep full control of my keys throughout the process.

What are the current trusted, non-custodial options for doing this in a way that aligns with Bitcoin's principles? I'm interested in learning about secure methods that others here have used recently.