Im M15 3 months from 16 and all life i wasnt to much social person, like i have few really close friends and i wasnt have too much contact with anyone  else, i never have any problems with talking with people or something limę this i just liked being Lonely in home and play video games with friends Or just sit in the house, randomly something like 2/3 years ago i started hanging out with group of my friend and now we are group of friends(around 20 people) and everything was okay but something like 6 months ago everything stopped giving me any fun, i loved riding with friends mtb bikes, now is make me borred after 30 minutes, im Big sneakerhead and now i read about new things about sneakers but its not the same what this was sometime ago, i loved games, it stopped giving me any fun for more than 30 minutes, like everything only Makes me sadder and i want sleep all time because only this dont make me sad.
This is copy of my other post from other reddits but it give more background

Crush dont give a shit about me and i need to know what i should do

Sorry for bad english its not my main language

Me, strong 3/10 really like my friend (she is 8/10) but she dont give a shit about me, we are going to a partys sometimes but every time it looks exacly the same, I dont drink (80% of reasons why i dont drink is because i dont think i need this and 20% is because i want make her feel safe) she is drinking and dancing with a lot of people from parties(we party in places where one person know second second third and there isnt too much random people) sometimes with me im following her most of the time she is coming back with me and everytime i end up lying in bed thinking about her.
For the most time in school we dont see too often and most time when we chat is when we randomly meet up at free time i know that she dont think about me like of a boyfriend and like bestfriend(but she tell me sometimes about who she have crush on Or what happening in her family.
I just dont know what i should because of this what i wrote earlier but i love her so much and i think about her for like 90% of time in a day(thinking only about her started around month ago€
For Real spending time with her is only time when im not sad, i just dont what i should do because everyday im more sad and its harder to be happy