Hello aspirant,
Your chances are very less of getting a seat in any nit/iiit or gfti,even your category won't help here, although you can try for some north eastern nits like nit arunachal Pradesh, nit tripura, nit Sikkim, nit meghalaya.
Or you can try for some private or state colleges taking admission through Jee mains score like Chandigarh university.
Or you can take a drop for an year and prepare again for the concerned examination.
Hope it helps.