This is a very VERY dangerous topic to bring up.
Maybe you are just entering a fase in your life where you question everything .. well some things are not to be questionned!
Did it happen? Certainly! Do not dare to doubt in that EVER again.
Were it really 6 mio jews ... well maybe it were 2mio ... but it could have been 10 mio as well!
We do not need to have an exact number to see the monstrosity in what happened in the darkest hours of our history. Now never bring up this topic again.
And do governments lie? Who doesn't