Hey Sanrthosh! IIT JEE Mains being a national level entrance exam which is conducted in broad level. Many colleges participate in JEE Mains so you will definitely get a seat. You can predict your college with careers360 college predictor on the basis of your rank in JEE Mains 2019.

https://engineering.careers360.com/jee-main-college-predictor

Hello Santosh, Aactually your rank is not so good still chances are there that you get a NIT college or Gftis and it may be possible that you can get a seat under home state quota.So,just wait for the results of subsequent rounds,you will definitely get a good result.I hope that you have filled as much no. of preferences as you can because of your low rank.

Hope this helps.