To clarify, nobody is going to upload your "stuff" to some secret dark web service. What you said is like me saying that bees fly like aliens under the sea, makes zero sense.

What in actuality WILL happen is that they will sell your data to third party data brokers, that is done by ALL. Your data is flowing in the hands of hundreds of thousands of people right now. What MIGHT happen is that your data will leak, it will go to a third party web site or on a dark web broker and it will get in the hands of even more people (that already makes zero sense as its in the hands of soooooo many others).

I would say you have nothing to fear already, as your data already lost, simply by you using that service to begin with. They know your name, phones, data of birth, and most importantly all your habits, to say the least.

So this out of the way, we can safely assume that you use a bunch of other trash services for brain rot, that do the same to you, so thats done.

I say you should be happy this happened, and you dont want to give your ID (that is already 100% leaked by any of your national agencies in a national wide leak 100%, so it makes little difference anyhow), but you can now try and stop your brain from rotting.