For starters, Facebook (Meta), Google, Apple, etc, all of them are tracking people as much as they can so that they can then sell that data to the highest bidder. Remember that Google (Alphabet) is an advertising company first, that's how they make their money.

Then you have the multiple Intelligence agencies all around the world such as Five Eyes.

You can read more about Internet Privacy to have a look at how much stuff is being tracked all the time.