Hello Dear,

It is very difficult to predict the college because you do not mention  your state region. But  you are belonging to ST category. So you have ST category quota.  And according to you,  you got 85.6 percentile in JEE Mains then your rank would be around 147312 - 165600 . There is  minimum chance to get admission in NITs. But there is  chance to get admission in NIT Goa.

You can also  predict  colleges from the link given

To more information about NITs cutoff :-

NITs JEE Main Cutoff 2021, 2020, 2019, 2018, 2017 - Check NIT B.Tech Admission Process, Opening and Closing Ranks (careers360.com)

Hope this information helps you...

Best of luck :)