As to the Mueller investigation: no US person has been charged with _anything whatsoever_ related to collusion thus far. It's all "tax evasion" or process crimes. And he can charge anybody he wants in absentia: it's no secret that governments spy on each other and wage psy-ops campaigns all the time. Heck, Obama even listened in on Merkel's phone calls. Russia is not unique in that regard. In fact it's somewhat unique in how _little_ it interferes in affairs of other countries it has no common borders with.
For a bit of a historical aside to give some color to my perspective, consider that the US helped to re-elect Yeltsin in broad daylight in 1996 (he would have lost to a communist if it wasn't for the US), and was heavily involved in getting Poroshenko elected in Ukraine, also in broad daylight just a few years ago. US influence in Ukraine predates Poroshenko, though: see e.g. Manafort.
So to sum up: I do believe that there was "interference" to the extent proven by concrete evidence such as Facebook spend. I do also believe that such interference is part and parcel of international affairs: the US itself interferes all the time, often in a rather heavy-handed way. I have seen no evidence thus far that the DNC hack was indeed a hack, and not a leak. I believe about 0% of what Crowdstrike says, given its affiliations. I don't really believe in "alleged intrusions in voter registration systems" in absence of independent evidence. As far as I can tell it's fake news.
Note that I did not say that there wasn't an influence campaign - evidence suggests otherwise. I merely said none of the candidates colluded to benefit. If they had, something would have leaked already, and/or collusion-related indictments would have been made against the people involved (note however, that indictment is once again not a proof of wrongdoing).
The "meme" I was referring to is that Putin is this omnipotent evil mastermind who has the capability to decide who gets elected in the US. He's just a thief and not much more. You're de-facto putting him on a pedestal he does not deserve to be on.
And stop the histrionics, will you? Challenging a point of view is not "dangerous". Neither of us has any verifiable evidence either way, so it's a faith-based argument.