Bottom line: it's somewhere quite close to dead even and you can't tell for sure if a majority is for or against. Which anyway depends on how you phrase the question. So I find it somewhat ironic that you complain about the news not fairly reporting on this poll, when you've presented (quite possibly by accident) the most outlying poll out there and drawn a rather doubtful conclusion based on it about the majority of Americans.
I compared Obama's approval rating in the same week of his presidency to Trump's approval rating in the same week of his presidency. My "complaint", actually my statement was that the media should be discussing approval ratings in a presidency as compared to other presidencies so that context is given. It's a pity your views on Trump are blinding you to my point about context.
Stayed the same of increased are both positives then. It clear that you're stating it has not gone down since the impeachment.
I can disapprove of some of the things the President is doing and still be against his impeachment. And yes, I am against impeachment in this case. I don't think he violated the Constitution. And yes, partisanship is extremely high. In another presidency and another Congress what happened with Ukraine would likely have led to a formal censure of the President by Congress. As partisan as the Clinton impeachment was, so the Trump impeachment is.
I think one of the things you're not seeing is the view from within. I've lost friends because I supported due process for Kavanaugh in 2018. But they said I was supposed to reject him on the basis of a he said/she said argument because he was a Republican appointee. Many people who align with Democrats have taken to viewing people with views that deviate from the stances taken by Warren/Sanders as tantamount to being racists, Nazis, Republicans, etc. I especially love when I am called a Russian troll because I deviate from the orthodox views. Especially when it comes to immigration. It gets tiring. For instance in my exchange with Elizabeth on FB she immediately thought that people who voted for Johnson in the UK did so out of hate. Not because the thought of Corbyn and what he stood for was horrifying. And she ascribed those people who vote a certain way/support certain views of immigration and ICE as doing so for reasons of hate/xenophobia and that those views only occur in one party. And when I showed her quotes by Obama, Bill Clinton, Feinstein, and Schumer she had no response. Maybe because she didn't know. Or the media she consumes is not putting things into context. The point of this paragraph is that on so many issues when you're not ideologically pure, the side you would normally be on pushes you to the other side. And the media is not giving context. I will say this, if either Sanders or Warren get the nomination, the chances of me voting for a non-Democrat go up to 100%.