Hi i m doing my B.Tech(IT) & i am preparing for IAS. after my degree i want to join in the best IAS institute which really has a good recor

I m good at studying. i have 92% in 10th & 12th and now in engineering currently i have 83%. I can work very hard. i want to clear UPSC in my 1st attempt with rank 1. so i need an institute which can help me to acheive my destiny. i can't afford high fees.