SPRAINED SHOULDER BASKETBALL SOON HELP ME?

as well as having 2 sprained ankles, i sprained my shoulder yesterdy. i was boxing with my friend at a basketball court (typical teenager jack stuff) and my lat punch i extended my arm as far as it can go (and gave a nice *** punch to his face) but after that my shoulder was hurting all day and i ***** play baskertball. i think i have a sprained rotator cuff bcuz i can really lift my arm up widout hurting it. all in all I NEED FREE EXCERSISES TO HEAL MY SHOULDER QUICKLY and if im wrong about the injury i have, correct me. IM SCARED LIKE A MUA CUZ BASKET COMING SOON an i wana make jv's