i have hit rock bottom

dropper . messed up jee mains veryy veryy poorly . missed 6o percent criteria in maths by 3 marks . I don't know what to do with my life rn

i have completed matrices and determinants , vector and 3d, limits, continuity and differentiability

electrostatics, current , capacitance, ray optics , and modern physics basics

chemistry only mole concept , solutions, chemical kinetics, electrochemistry, haloalkanes and haloarenes. alcohol phenol ether

can somebody please tell me how to score 80 marks at least

i need a decent college . I come from very poor background with only one parent idk what to do i feel hopeless i am stuck ina loop of my failures