I gave you two possible leads to research on your own. If you follow those you will see that elements of the FBI, CIA, NSA were instrumental in feeding the incriminating leaks to Assange. Not the heads of these agencies, of course, who are bought and paid for, but the underlings, who do have integrity still. The NYPD was also involved.
It’s not my responsibility to “prove” my contention to you. The info is out there. You have certainly not proven yours, because it is logically impossible to prove that “all of the TPTB” supported Hillary. One simple exception proves that to be false.