Nope, that’s not how this works. The jury found reason to doubt their guilt, that’s not something they can be wrong about. It is quite literally meaningless to say they were wrong.
That is false.
No, appealing to the jury is the only way to determine it, as they are the ones who determine what the facts of the case are. Factually, the videos do not prove murder (or at present, any other crime). You are provably wrong here, and no amount of claiming otherwise will change that, any more than claiming black is white will change anything.
You could, if you feel that the law is wrong and that such killings should not in future be justified campaign to change the law. Hopefully you will fail, as the right to self defence and the right to presumption of innocence are more important than your desire to get vengeance on the police for not doing their job exactly the way you would like them to.