One old saying - failure is the piller of success. Remember it through out ur life.If all people upset after failure in first few attempts then many things are not invented. Motivate urself , concentrate on ur work and study and work hard.Result is not always the goal , the journey to reach the goal is the main experience which motivate u rest of ur life. Best wishes. If external help needed then u can contact psychologist or me .

Hi I think you are confused and you should talk to a mental health professional to gain an insight and understanding about what's going on. Seek help. I'm here to help and guide you Consult with me or any psychologist for therapy and counseling Connect with me through practo app All the best

At this age ( 21), you tend to feel like that. But you have to understand that you have decades to achieve your goals. If this negativity about yourself is persistent, depression needs to be assessed.