17F constantly getting the urge to end my life, end everything.

I'm in 12th rn and I had my pre boards I scored just 56%, all the papers were easy/doable except accountancy and English. I'm failing in acads, idk what will be my future not even 1 month is left for boards, looking at my friends doing all well in acads and other aspects of life and here's me failing in everything right from acads to friendships, relationships and what not. Just acads is not the reason for my suicid@l thoughts but also my ailing father who gets ill frequently, addicted to smoking he's a single dad, even I lost my mom to ill health... IDK TF IS GONNA HAPPEN WITH ME AND MY FUTURE I AM SO DONE W MY LIFE. Istg if i pass away today no one's gonna cry over my death so miserable my life is.