Im going to fail my maths gcse exam on the 6th june.im thinking of giving up?

basically i started of year 10 with a maths exam (i do mo dual maths) and i got a U it didn't sup rise a i was sleeping half of the exam then i paid to re take it.then i had a another exam in june which i actually cared about and got a high C.then my re take approached and i got buckled down had loads of help tried hard and got B and C i was so please that i put so much effort in but now unit 3 is making me depressed i dnt want to re take in november i want to get a C overall im really scared i have tried to revise and marked my own paper and got U i have tried revising but I JUST FEEEL TO GIVE UP!