You are the one with no proof. Only conjecture that you contacted mobs of people and only 3 responses that claim it did not work.
Sorry, that is not 'real world'.
Also, if I was going to offer proof, it would be for my own products, that I have already provided sufficient proof to be raided by the FDA.
You need to understand that people with good results will confide it to people that they know and trust, not to trolls. Are you even aware that if doctors find that you use alternatives, they can label you as a problem patient? And that does not even include if you go out and proclaim that alternatives work.