I feel nothing

Idk if it's me or life is just being unfair to me. Maybe today isn't a happy day for me. Everyone change why does everyone change? And because of that i can literally feel myself avoiding from everyone i scold because of the slightest thing i show tantrums and shout unnecessarily. What is happening to me why does it feel like no one gives a fuck about me no one cares. I feel like i'm always alone when there're so many people around me. I don't feel loved by anyone i just felt like everyone has gave up on me like "u dun mean anything to me anymore" i feel unimportant i feel useless worthless at time i tend to hate myself i hate my life i don't think what to do i feel so lost like no one is there for me i have to handle this all by myself i really get pissed off easily and when i am, i will spout hurtful words to people just so they'll feel how i feel. I lie down on my bed and think about my life and just cry and i get hurt so easily what is happening :-(