The thing that makes no sense is the mainstream narrative. [...]

Jeez. So much disinformation in your post. I'm not going to go through all 17 points, but here's a few.

(1) What about the Haavara Agreement? Do you think that people and governments can't change their plans? The Nazis changed their plans from forced deportation to extermination over the course of the war.

(4) Enigma was used for military communication, not the internal deliberations among the Nazi leadership. And gassing was not even close to the main method used in the genocide. About 19% of the Jews who were killed were gassed.

(5) Fred Leuchter was a conman and fraud. I mean that literally. He was a crook and a fraud and his supposed investigation into Auschwitz is pure junk of no value whatsoever except as an example of incompetence and fraud in action.

(6) "Night" is a fictionalised account of Elie Wiesel's experiences, not intended to be read as every word the literal truth. For instance, it is unlikely that more than a tiny handful of people were literally killed by being thrown alive into the crematoria. That is a metaphor. The word "Holocaust" itself means a burnt offering. Wiesel's book is about his loss of faith. Describing people as if they were sacrificed to god like a piece of meat goes with the theme of the book.

(8) There were thousands of concentration camps, running for over a decade, and conditions varied enormously between them depending on where and when the camp was, its purpose, and who was in charge. Yes, some concentration camps had better conditions than others. What of it?

(13) It was Eichmann, not Himmler, and what of it? You think that Nazis couldn't decide to let a tiny fraction of their victims go in an exchange for goods they needed?

(16) Yes, disease and starvation was the largest killer of the Holocaust victims, about 32% or so. But this was not a mere consequence of war, "bad things happening everywhere, we tried our best but they still died", it was a deliberate policy of malicious neglect to let disease and famine kill as many people as possible. Around another 25 million people died of neglect, hunger and disease around the world as a direct consequence of the war, but they aren't counted as Holocaust victims because they didn't die from intentional, deliberate policy.

My own is that It's between 0-10,000 non-justified civilian deaths

And how precisely do you come up with that figure? Pulled it out of your arse?

There are more than 10,000 victims who died after the liberation of the concentration camps, so Allied troops watched them die. (You might be shocked to learn that people on death's door, dying of hunger and disease and neglect, don't magically recover instantly just because their captors run away and they are liberated.)

There are far more than 10,000 victims whose bodies have been found in mass graves. The Nazis tried very hard to destroy as many of the bodies as they could, but even so, there are still thousands of bodies found. There were 22,000 bodies found in mass graves in Odessa from just one German and Romanian massacre of Jews in October 1941. A few months later, a second massacre killed around 50,000 Jews.

There are transportation records of far more than 10,000 victims who were transported to the extermination camps, never to be seen alive again. If they weren't killed, where did they go? Narnia?

So we have over 70,000 victims from just two massacres in one city. Your figure of less than 10,000 is idiotically low.