Did Hillary cheat her way into winning the primaries against Bernie?

I constantly see this, but I don't understand it.

Hillary was given two questions on the debate: flint water crisis, and the death party.

Arguably, these are not surprising issues to talk about, and technically, there's no proof Hillary used this information. But when people say she was leaked info, it was two questions from one lady who was fired. This one lady doesn't represent the DNC.

When it comes to super delegates, people were upset that super delegates were preemptively given to Hillary. But in all the ones that quickly favored Hillary, it would not have made a difference in Hillary winning the primaries

>Clinton: 2,205 pledged delegates

>Sanders: 1,846 pledged delegates

>Clinton won the pledged delegate race by ~359 delegates.

And don't get me started with 2020. Biden outperformed Bernie in every swing state to Bernie in the primaries. Swing states Biden barely won against Trump. If Biden did better than Bernie in the swing states, how could Bernie have beaten Trump? The general election tends to be more moderate than primaries (more politically engaged votes vote in the primaries, who are usually more left than the votes in the general election).

What am I missing?