I agree with just about everything you have to say about Trump, especially the lying part. He's the type of person to piss on you and tell you it's raining. I'm honestly not sure if he even knows he's lying, or if he's just a master of doublethink. Of course, most of that applies to Hillary as well
Acting like a six year old doesn't solve this problem, it just makes it that much worse. It also has the side effect of making many reasonable people dismiss your arguments out of hand.