Considering your CLAT inputs, ie your rank of 21519..there are no chances of you getting a NLU

Considering your rank you don't seem to have a possibility to get an NLU as the cut offs in previous years were very high.
1. National Law School of India University- 59
2. National Academy of Legal Studies and Research- 130
3. National Law Institute University- 351
4. West Bengal National University of Judicial Sciences- 213
5. National Law University Jodhpur- 343 6. Hidayatullah National Law University- 574
7. Gujarat National Law University- 453
8. Ram Manohar Lohiya National Law University- 627
9. Rajiv Gandhi National University of Law- 801
10. Chanakya National Law University- 909
11. National University of Advanced Legal Studies- 826
12. National Law University Odisha- 1023
13. National University of Study and Research in Law- 1051
14. National Law University and Judicial Academy- 1124
15. Tamil Nadu National Law School- 1151
16. Damodaram Sanjivayya National Law University- 1180
17. Maharashtra National Law University, Mumbai- 478
18. Maharashtra National Law University, Nagpur- 1126

I HOPE THIS HELPS