the way to watch this movie is to think of it as you are watching part 6 of a series of films, you are just coming into them the wrong way. tons of inside jokes and references to movies that don't exist. LOVE this movie
Or think of it this way, pretend you have never seen an MCU movie and you start Civil War as your 1st one, you can follow it bassicly but so much of the dialog and things in it do not make sense. This is what is going on in this movie. You are suppose to already know these characters because everyone does