Hello student,

You have not menioned your home state. With a rank of 12,234 in general category, you may get NSIT or any government colleges only, for the top NIT's close with a rank of around 6,000. You may go through the following article regarding the previous year's cut offs and rankings in the jee examination and know your chances of selection

https://engineering.careers360.com/articles/jee-main-cutoff

Good luck