Do you actually play basketball?

What do you go to in a game scorewise? There are three options and one rare for a short game of one on one and one for the last good game of the day. What do you call it when it's 7 or 11 to nothing in one on one? What are your options after you score a bucket in 21? What happens when you miss a free throw on 13 or 20? Do guys play 3 on 3 full court? Why is the game disproportionately weighted in favor of guys who can hit 3s in a pickup game? What happens before the first game of the day? What happens on some courts and doesn't on others as far as picking up teams? What does it mean to shoot in?