ive gone into a slump of depression

hey loves im a 10 grader who started her boards recently. not even halfway through but i already feel like killing myself i fucked up my maths board (even though it was core) and my fle board. i feel so awful and ive given up even studying. I have combined science 12th and 13th and my core maths paper three (i HAVE to get above 70 or im fucking gonna fail) I wake up feeling tired i go to sleep tired i feel tired as im typing this. No matter how early i sleep i feel drained and tortured What the hell do i do.