Been avoiding internet ads and tracking for 15 years now. I feel like the unibomber. Facebook and google probably still have a good fingerprint on me, though, due to iOS not letting you use good ad blockers.
Something uncanny happened recently in terms of the ads I do see that gave me quite a bit of paranoia. My SO recently bought a distinct pair of leggings. How am I seeing ads for that same exact pair of leggings, on my phone? I don't think I've ever typed out the word leggings on the internet before this very comment.