I don't subscribe to all the theses you present above, some I think are false (UFOs), others I think are true (Jeffrey Epstein had a pedophile ring that involved high rank politicians, even though maybe he did kill himself), others I really don't know but am open to both sides (9/11 attacks).
But even for those that I am pretty convinced about I wouldn't be able to put forward arguments better than what you can find in random YouTube videos on the topic.