How Can Severe Depression Due To High Expectations From Family And Friends Be Treated?

Hello sir, my name is Shuvam, I m from India. I am a college student, currently studying B.Tech. I think i have severe mental issues for last 3 years. I am from a lower middle class family, and the expectations of my parents are too high. But i am confident i can do that. Due to our family conditions relatives tease us, i saw my parents crying. I m totally broken from inside. I have the confidence but still i cannot fulfill my desires. I am a good guy, actually too good. Thats one of the biggest problem i have. nowadays its too bad to be good. People think you are fake, you are flirting. This type of phenomena happend so many times with me. I always try to help whoever in any problem, but i always have failed to do the right thing. I am a good guy, so i always expect good things from others, but this just doesnt happen. for that reason i feel like a i commit a crime, i am a criminal. People tell me i am a trust breaker, they told me so many things that i am not used to. It makes me more sad from inside. I am just living for my parents, full of confusions, hurtings, sadness. Please help me... Please