Hello there,

Well as per your percentile of 83.39 in JEE Main, so the marks you are getting is between 58 - 67 and your rank lies between 57132 - 240541. Now to get into colleges like NITs,IIITs or GFTIs you have to first be JEE Main qualified and for that you have to first clear the required cutoff as per your category. Now for general category, the JEE Main 2019 cutoff is 89.75 percentile. Since you have less than what is required as per your category, then as per the rules you are not JEE Main qualified. Still you can attend the counselling process by JoSAA but will be difficult for you to get a good seat. Hopefully you might be able to get a seat in the last rounds of JoSAA. Also you may try for other colleges that takes admission through JEE Main score but doesn't participate in JoSAA. In such cases you have to attend the respective colleges own counselling process to get a seat.

You can go through this links and checkout the details about : 

• JEE Mains Marks VS Percentile - https://engineering.careers360.com/articles/jee-main-marks-vs-percentile
• JEE Mains Marks VS Ranks - https://engineering.careers360.com/articles/jee-main-marks-vs-rank

Good Luck !!!!!