You can formulate all kinds of questions a given experiment like the LHC didn't answer but unless the experiment actually set out to answer these questions in t

You can formulate all kinds of questions a given experiment like the LHC didn't answer but unless the experiment actually set out to answer these questions in the first place, you're mostly just talking about the empty set. Namely, the LHC was never directly concerned with black holes, the Big Bang, dark energy and dark matter. (Outside of the possibility that completely new physics would be found and that this would somehow lead to an explanation of dark matter, dark energy and/or quantum gravity down the road.) Moreover, I'm also not sure why you're casting doubt on dark energy (= the cosmological constant), the Big Bang and black holes. There are certainly many aspects about them we don't fully understand yet but their existence is generally not disputed.