Hello siddhi.

See ur marks in the JEE mains is just enough for u to grab some lower branches in the average colleges and better branches in the lower good college like NITs IIITs or GFTIs for pursuing ur higher studies in the field of ur interest under the btech courses. I m providing u a link for ur help.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches/amp&ved=2ahUKEwjy4639hKLiAhUF6nMBHa0HBQMQFjAJegQIAhAB&usg=AOvVaw2OXl9cMS4B7GJ9DfTIJZCg&ampcf=1

Ask if any query. Good luck