How can I make it on a basketball team and improve my game as a team player?

well if u want to play for a team sign up for a summer league at a local ymca, or join an AAU team, or u & your friends can make up a local team & play against others at a playground, i live in houston,tx so there's a lot of playgrounds & tournaments going on, but you should concentrate on making your schools basketball team, because that is a really nice way to step up your game & get noticed, & also a chance you can get an athletic scholarship from a college scout, & to improve your game play against opponents who are bigger,faster,or stronger than you so you can learn how to evolve your game & adapt to each style, & always practice, especially on your weaknesses, you said your weakness are free throws, well the main goal in shooting free throws is to bend your knees & use your legs as leverage to your shots & stay concentrated never shoot free throws flatfooted, well i hope that helped good luck on making the team