Hello Raghav,

With your rank of 33147 in JEE Main, you certainly won't get a seat in NITs for CSE branch. However, you may get other branches in NITs that too depends on the counselling. To get seat in NITs,IIITs or GFTIs you need to attend the JoSAA counselling proccess. For other private colleges or government colleges those who accept JEE Main score/rank,you have to attend their respective counselling session and see whether you get a seat under CSE branch or not. Below I have listed some of the colleges where you might get CSE through your JEE Main rank - 

• Sharda University
• SRM University
• Hindustan College of Science and Engineering
• CV Raman College of Engineering 
• Academy of Technology
• ACS College of Engineering
• NIIT University
• Lovely professional University

You can go through this link and check the details regarding JoSAA counselling : https://engineering.careers360.com/articles/josaa-counselling

Good Luck !!!