i lowk don't wanna live anymore

hi, fellow redditors

i just want to have a safe space to let out everything that i've built up for the past few months. i (m15 -> m16 in october) broke up with my girlfriend of three years in february of this year. ever since then, i've felt isolated from my friends and i feel like i truly have no purpose in life. i've seen other girls and i've always thought; "do i have a chance with them?" and i just keep thinking, hell no. i feel like i'm a disgrace, a mistake from god. for the past three years i've felt like my purpose was to be a good boyfriend, to be a good friend, to be a good teammate to the people i do sports with. but now, my friends hate me, my ex has moved on, and some of my teammates have gained egos after playing aau. i think my life truly has no purpose, but i'd love for advice/therapy. i'm glad this subreddit exists so i can talk to people willing to help.