No, quantum mechanics is the most accurate part of our whole knowledge of the universe. Look at how well our calculation of the fine structure constant matches measurement. It’s an amazingly precise area of human knowledge.
Your suggestion breaches fundamental aspects that underpin all physics. Energy conservation, relativity, momentum conservation, even the very basics of what a wave function is.
It’s not like positing that Bigfoot exists, it’s like suggesting that the earth really does rest on the back of a turtle and that aliens have replaced our parents with robots.
On the history point, you are equally wrong. Archaeologists, geologists, sociologists, linguists, historians, and more, would all need to be in on the conspiracy. All of them, from all over the world. That’s just not possible. The idea that not a single one would speak up.
How can you even suggest that all governments; Russia, France, Peru, The UK, that they all have agreed to fake world history?
And why?
This is always the problem with conspiracy theorists, you can’t or won’t try to understand what else would need to be true for your ideas to be possible.
The only interesting part of it is the psychology. How do people of limited intelligence and education come to believe that they know more than all of the worlds experts, in so many unrelated fields.
That bit, I find absolutely fascinating.