Okay this is reaching Holocaust denial levels

When you examine news and media with a critical eye, you have to do it critically, not just be contrarian

Yes, facts around Xinjiang and the Ukranian famine are distorted for propaganda purposes - this does not mean other genocides were. You got the "we shouldn't accept everything we're told at face value" part without getting to the second part of examining the claims to discover what's true and what isn't

In this case, your questioning of the Holocaust comes out of antisemitism, full stop, because you need to ask yourself: who distorts facts, and why?

With Xinjiang, facts are distorted by Adrian Zenz (a religious zealot against China) and western governments as a cudgel against China for being a perceived enemy state. Claims are distorted or fabricated to make China look bad

With the Holodomor, facts are distorted by Nazis as part of the Double Holocaust myth in order to downplay their own atrocities and make the Soviets look as bad or worse. That a famine happened isn't in debate however, what is debated and distorted is whether the famine was intentionally engineered as a Ukranian genocide

Now take that and apply it to the Holocaust. If you question the facts and veracity of it, the question becomes to what purpose? The only people who could possibly stand to gain from distorting facts here would be the Jewish people, and that line of thinking is blatant antisemitism

Tldr shut the fuck up and read some history. No investigation, no right to speak