I find it really hard that you can make it to DU, but you could try by filling the application form. Also you should try out other colleges also and fill up the forms there. Hard work and dedication will take you to a good college definitely.

For DU you may try the Delhi University College Predictor by Career 360, it will surely help you in choosing:

https://university.careers360.com/delhi-university-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=du-college-predictor&gclid=CjwKCAjwsO_4BRBBEiwAyagRTT8D0nYjskcW45Ti3u2JkY5eH0Zc1synko3pDOtbQuVGmsvshbzaBhoCcyEQAvD_BwE