Hello That in.

See the percentile u have score in the JEE mains exam is too low for u to grab a seat in the ECE branch in any of the good colleges like NITs IIITs or GFTIs for pursuing ur higher studies in the field of ur interest under the btech courses. U should be going for private Institution for ur btech career. 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