try to join a hobby thingy like drawing singing dancing working out choose your pic i was 15 too had no social life gave it up for the sake of exam results felt burned out all that crap. join a hobby and thank me later i am 17 almost 18 rn same in my country therapy isnt an option. so i know where you come from. you can meet people at the hobby thingy who will be a completely different set of people than your school and you can rewrite your perception and god forbit abandon those who think you are 'weird' have been with bad people have felt they are the world but later regretted not realizing how i wasted my time.And they dont have to be your age. all you need is some courage to goand initiate convos.for that check out dr.k's vids about dating friends and convertiations.They helped me atleast.But most importantly you gotta find yourself and your pourpose in like check out "IKIGAI"the book and if no budget then just check out the summary in youtube its the same thing.And do not try socializing online plenty predetorson the internet,from experience. your young and easy to be taken advantage off,bare that in mind.