I didnt make the varsity basketball team?

I got cut from freshman, jv and varsity. Im a senior but my dream is to play pro-ball. I personally know most of the guys on the team. There all good but not omg good. But at tryouts, at my school alot of people brlive that the coaches already make the team prior to tryouts. We dont even scrimmage during tryouts. Its just a bunch of drills. Is this how tryouts are suppose to be? I got better at dribbling, shooting etc. i could be the best shooter on the team and they would never know. Just trying to make a point. We practiced pick and rolls, did painful defensive slides, did full court plays, free throws, and passing drills. I manage to do all the drills without looking like a clutz buy i dont see how i could make team doing this. Dont get me wrong, alot of people think im good. I consider myself ok but needs workBut at my school its impossible. My plan is to keep training and tryout for D2 ball than transfer after a year or two to D1 if i do good enough. Is it still possible?