but 11 million just does not add up and it is practically impossible.
Absolute nonsense. The figures we have for the Nazi genocide are based on close examination of what evidence we have. The minimum figure given by experts is about 9 million (not including the genocide undertaken by the Wehrmacht in the Russian invasion).
I'm sorry but you just have no evidence for your claim, and you've failed to disprove the stacks of it which lies against you. We have Nazi civil servants personally testifying to designing gas-vans. We have the testimony of Germans who murdered Jews. We have (some) documents regarding the arrest, transportation and (some) records of deaths at camps.
And there's absolutely no evidence in the links you provided either. Apart from hokey and badly-supported assertions.