Okay, let's say that high level operatives in the Trump campaign actually did collude with the Russians to bring Clinton down in the 2016 General Election. Truth be told, it wouldn't have made a difference if they did.
Would it have been ethical and above board? No, it wouldn't have. It would have been dirty politics; politics of the kind that Progressives have engaged in against Republicans since the 1960s. Unethical? Unsavory? Yes on both counts, but criminal, not by a long shot. As long as no money went directly to the Trump campaign from Russian nationals (which there is not) - and as long as there was no proof of ballot tampering (which there is not), it doesn't matter what the Russians did or whether or not the Trump campaign knew about it.
Contrast this to a few things, and these are things that actually do matter:
The facts are what they are. The Trump campaign had no unethical and/or illegal contact with the Russians concerning the 2016 General Election here in the US. Conversely, the Clintons had an ongoing relationship with the Russians and were working nefariously to rig the election to their favor both in the media and by use of unethical and illegal means.
So, the question begs, why is a special prosecutor not being seated to investigate:
One day, before I die, I truly hope that Republicans elected to office grow a set of balls big enough to actually go after these bastards.