What you need for Wikipedia is a source they accept as a reliable source. Unfortunately their current guidance is biased towards the liberal media. Efforts might be needed first in the higher level (editing the guides) to bring balance to that bias. In my opinion those efforts would be good regarding the whole Wikipedia project.

The easiest way might be to join the talk page discussion on pizzagate, explaining what's wrong, showing some support for the claims with well reasoned opinions and gather support of other users to join the discussion too. Enough of editors agreeing on something might work there.

Just a warning: There are also compromized editors eager to debunk those discussions, similar to for example shill here. Have a second thought if that is worth the effort, or could you maybe achieve something else similarly effective using your time in other projects. Everything pushing the awareness is good work.