Itsohkay dear, for achieving something you necessarily have to put efforts. I agree that it might be a problematic situation for you to gain a chance to perform in any of the cafes, but keep trying and don't lose hope, you'll definitely succeed. Don't forget it will be a slow process but quitting won't speed it up. And besides just trying for cafes, if possible you can try and give small performances in public places such as CP in Delhi. Also, not to forget, use the benefit of internet too. Wish you luck!