All of my friends are either unsupportive or absent

i don’t know what my purpose is in this world. i put myself out there, and the only people that seem to care are people who don’t know me. everyone i know who claims to know me or care about me is nowhere to be found. it feels like to them i am just a distant memory or obligation to them. the only things i really enjoy doing in the world is singing and playing guitar. it makes me happy and i can express myself on deep levels. but the people who “care” about me aren’t there to support me to do the things i love to do. it feels like i’m disrespecting myself for respecting and loving people that don’t even care about me.