Hey aspirant, You have managed to get quite a considerable rank in your Jee main paper 2 2019.

But 4000 rank is quite high for B.Arch course in NIT if you are a general category candidate.

You have hardly any chance of getting admission in any of the NITs.

You may use your home state quota but that too may not help you much.

You must look for other CFTIs and State universities you may have a chance to get admission there.

You can look for the cut off various NITs and CFTIs on the link below:

Https://engineering.careers360.com/articles/jee-main-cutoff-for-b-arch-b-planning

Hope this helps.

For any further query please ask in comments.