No collusion, but just barely. Obstruction isn't off the table, even though you'd like it to be.
Jesus, look at the transcript. Trump did everything possible to obstruct, which proves intent. If I put out a contract to murder you, and it's found out before you get killed, I still go to prison for conspiracy to commit murder. Fact.
It is also fact that Trump intended to obstruct, and therefore meets the bar (Barr) for obstruction charges. That his underlings prevented Mueller getting fired etc. doesn't get Trump off the legal hook.
Barr's interpretation is highly suspect and probably not legitimate. Let Mueller testify, and release the un-redacted Mueller Report to Congress. Then everyone can see if Barr is a lackey or not.
Trump is neither exonerated nor innocent.