Hi aspirant

There is almost nil chances for you to get into IITs and NITs .431 gate score is very less,but if you belong to Sc/ST then you may get into NITs.

You can apply to state universities but chances are low.

Usually the cut off Mechanical engineering is too high.You can apply for other inter disciplinary branches .

Use predictor to know what you get with your score here: https://engineering.careers360.com/gate-college-predictor

You can check NITs and IITs cut off here: https://engineering.careers360.com/articles/gate-cutoff-for-nits

Hope this helps you.