Is this a genuine question? To ask this must mean you either don't realise all the tracking that is happening via your phone and web browsing unless you explicitly block it or you explicitly block every possible opportunity to be tracked and put continuous effort into staying anonymous. In the case of the latter, you know the answer because it would simply be not spending that time and effort, which isn't the top priority of most people, nor should it be.

You don't get into that state, it's the default result of being tracked as surreptitiously as companies can get away with.

By existing in this current era. Facebook, for example, has been found to keep profiles on people who are not yet registered in their service.

https://en.wikipedia.org/wiki/Shadow_profile

By browsing the web probably.