He got off for another reason. There was no original crime. You can't obstruct justice if there was no crime to begin with.
And that is a key point. I too hate him, but he was elected by our voters and our laws. So he is the President. And for two years the Dems, CNN and NPR have been lying that he colluded with the Ruskies. They did so because they wanted him crippled and unable to perform his duties.
That was an outright lie, and they should be prosecuted for obstructing the duly elected President of the United States.