I have a serious basketball problem..please help!?

Okay, so I have absolutely no confidence whatsoever, but I can..if I'm just a good basketball player.. Allright, so i go outside about four or five times a week and do ball handling and shoot for and hour and a half to two hours..and I do conditioning every once and a while, but I dont really need that because Im only in the seventh grade...So I go out and shoot and sink most of my shots and have my brother defend me to kind of simulate game situations, and I school him....but when real game time comes in AAU and school team, I just can't do anything! Every shot I take just will not go in and i cant incorperate the things i do at home into my game! and it makes me so extremely angry that i dont play as much as i should just because of this problem and i know im better than a lot of people think i am! Its just such a confidence killer and makes me go home and cry after every game! it just suckss...so if anyone has any advice please help me out..and i know for a fact that i dont suck,,i do have my games where i do well and do my thing, but how can i do it every or most games?! help meee!!