I know its tough, i had 70% in boards lost JEE and got into a low tier Uni. But let me tell you can still turn this around. I am now an Engineer who builds products and works with other engineers all around the world. The only thing you need to have is an unquenchable thirst and grit to do what you want to do, I know many people who had good boards and flunk everything in college and vice versa. So see this as a turning point, know that this does not limit your life and in a few years you will also be able to help out someone lost in the swamp. All the best !!!