Hey Pavan,

It is not necessary for one to get a seat alloted in the first round of JOSAA itself. If you didn't get a seat in the first round of counselling in JOSAA counselling, go for the next rounds. As there are 6 rounds for JOSAA, you can try and fill the JOSAA counselling form 6 times.

Your Rank is around 15000 and you fall under ST category. So you have good chances to get a seat in the Counselling.

You can also check which college you can get based on your rank using the College Predictor whose link is mentioned below :

JEE Advanced College Predictor: https://engineering.careers360.com/jee-advanced-college-predictor?icn=QnA&ici=qna_answer

JEE Main College Predictor:

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer