Hello shrutkirti.moudgil , From some research I got that yes the 15% of all india quota is only for the counselling of government medical colleges. And with the rank of 260342 its impossible for general category to take admission in government colleges but for confirmation you can use college predictor here:

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope it will be helpful for you :)