Bro just donβt do it is not worth it.
I know a neighbour uncle who lost his daughter, she committed suicide because he did not permit her marriage. She was 17 and guy was 23 or something. Uncle is as good as dead. No parent can handle losing a child.
I understand your parents have high expectations, the best and immediate way is to get away from home. You have an Engineering degree, use it to get an unpaid internship in a different city. Change of setting is what you need right now.
Believe me the successful future version of you will say the journey was tough but worth it. Just push a little more and you will make it.
I BELIEVE IN YOU!!
Suicide is NEVER an option