Hello aspirant!!

It's difficult for you to get seat in SASTRA University Thanjavur according to previous years cutoff trends. So try for some private colleges which accepts JEE Mains rank and gives admission to ensure a seat this year. 

Check the below link to know which colleges you get for your rank.

https://engineering.careers360.com/articles/top-engineering-colleges-accepting-jee-main-score/amp

Hope this helps :)

Thank you.