You keep repeating that there is reliable evidence of mass killings - documentary, eye-witness, and physical. This is simply not the case. Its only because of censorship that the stories could even be remotely seen as credible.
And if anyone in Europe presents any evidence that there were no mass killings, no mass graves, no gas chambers at Auschwitz, they are jailed for a number of years. Even an attorney who defended one who did this was jailed. So you are not likely to find any evidence disputing the official version. Only the official version is allowed by law.