i got 18000 rank i didn't get any seat in first counciling can i get a free seat in raghu engineering college for the second counciling and i had a sc caste reservation

You can look for options in the second round counseling as rank of 18000 would be equal to a score between 50-59. This is an average rank/score in the exam. Look for other options too and apply to different colleges so that you do not miss your admissions.