I think i have bad friends

Well i have always hung at with the same group every since elementary school and now im in high school and i dont really know why i hang out with them.They make me feel shitty about myself and treat me like im stupid(which im not a+ student right here)and they always make plans and dont invite me. The bad thing is i dont even know if they notice how much they exclude me.I should probably just tell them how i feel but for some reason i can't. Ok im done complaining about my life now.
Goodnight My lovely killjoys.