Sally, you have no integrity at all. I thought you were actually capable of learning and having an open mind. You aren't. The obstruction of justice is not "crackpot crap". How is this lost on you?
Let's say someone's posse is accused of burglarizing a hardware store. We will call the someone "Donald."
There is circumstantial evidence that Donald and/or his posse might have been involved in this.
Investigators begin to investigate.
Donald has some contacts in the police department and tries to get a few of them to stop the investigation. We do not know why Donald has tried to stop the investigation, only that he has. They say no.
Donald then asks his lawyer (we will call him Don) to try to get the police to stop investigating. Don refuses.
Word gets out that Donald asked Don to lie, and Donald asks Don to lie then about that. Don refuses.
There are a total of 10 documented times that Donald tried to obstruct justice, and the police department has punted to another authority on that issue.
There is not sufficient evidence to charge Donald with burglarizing the hardware store, but there is a lot of evidence that he tried to obstruct justice (by the way, there is no attempted Obstruction of Justice...there is only Obstruction of Justice, and the attempt is called "endeavor to Obstruction Justice".
Is Donald then exonerated of Obstruction of Justice?
Obstruction of Justice is a real thing, and it was created precisely to keep subjects and targets and anyone else really from trying to interfere with an investigation. It matters not if the investigation itself bears fruit, for guilty people get away with crimes all the time. You can not obstruct justice, and Mueller has determined that Trump did so 10 notable times. He has now punted to Congress. He made a point of reminding everyone that a President could be indicted after he is no longer in office. He did NOT need to say that. He went as far as he could have gone considering the OLC judgement that a sitting President can not be indicted. He all but said Trump should be indicted after he is out of office...he certainly has left the Obstruction of Justice charge up to Congress and/or another prosecutor. Mueller didn't even have to say he "could not exonerate" Trump. Prosecutors either indict or do not indict. This was a big step for Mueller to take, AND (just shows my ability to be open minded) it might have even been a step too far. The point though is that this was a clear indication from Mueller that he believes Trump is not innocent with regard to Obstruction of Justice.
Right now I am disappointed in you. I hope you are eventually blessed with discernment in this area.