After so much time of thinking, researching and testing all kinds of technologies and tools, my best recommendation to those who talk to me about privacy is the following: keep your profile public, the one that everyone knows, the one related to work and to all government services, services like Amazon etc. Only use those what you supposedly should and even need to continue moving in society. But, keep a second profile, absolutely isolated and disconnected from the first, and where you have your ENTIRE real private world. The one that you only want to share with those you trust. It's more or less what should be done in society in the real world.
And to all this, personally, in that public profile, what I do is block all communication between entities as much as possible, just because I hate that they make free money from me. I also mold it to my convenience.