Freshman basketball... what position and questions?

so i would play football but i need to have better grades and its too late so i can play basketball when winter starts... i weigh 179 and im 5'6 right now, ill probably grow a few inches over the summer but im just not too good at basketball.. im good at rebounding ans swatting people.im about 30% at 3 pointers,45% at mid range shots,60% at close range shots, and 85% at layups... for some reason i cant make a layup while while running super fast like off a fastbreak or somthing, i also cant shoot from the wing.i need to work on my low post offense and close range shots, and also ball handleing but i dont know how.i play basketball everyday at school at lunch and for P.E. does anyone have any tips for me to get better