I'm not really sure if it happened or not as I don't care too much

Then fuck off.

so if anyone can hand me short digestible evidence that looks reliable enough so if someone says the holocaust was true, I could post link(s) that are short enough that you don't have to read for hours,

I could do this, but fuck off.

but is also a website that looks modern and therefore feels more legit. (Not only am I lazy, others are lazy too)

Really, fuck off.

From the bits I read it seems the gas chambers were for lice and and it is really odd that the one place added concrete over the massive graves preventing people from doing sonar or whatever, so I do see the possibility of it being fake (After all, the winners write the history books)

You're getting it, but not caring is what got us into this mess. Find a way to give a fuck; I have what you want, make it worth my while even linking you to it.