Hey there!

You can apply for jossa counselling but you won't be able to get a college through that unless your home state is assam or goa. If you've appeared for jee mains you can apply for counselling. You need to qualify the mains examination to appear for the advanced which provides admission into IITs. So, if your home state cutoffs don't go as far as 7 lacs which is the most likely scenario, you won't get a college through the counselling. You can check out which colleges you can get admitted into using you jee ranking by using the jee main college predictor link below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer