my jee mains 2021 Feb 26th, 2nd shift, 84.05percentile and I am belongs to OBC Category shall I get nit seat in "National institute in Andhra Pradesh" in Tadipalegudam. in any branch or in any govt nit institutes

Hello aspirant,
According to your JEE Mains Paper-1 percentile your rank is expected to be in between 163168 - 183425. To get seat in any branch in National Institute of Technology, Andhra Pradesh one should get rank between 3946 - 15819. It is very tough to get seat in this college.

With this rank it is difficult to get seat in NITs. You can try in Private Engineering colleges which gives admissions through JEE Mains rank. In next attempt prepare well and work hard.
Tips to get good percentile:
1) You can concentrate on the topics which you missed in last attempt.
2) Give more importance to topics which has more weightage.
3) Avoid negative marking by answering only the questions you know answers properly.
4) Practice previous years question papers.
5) Give mock tests so that your score can increase.

You can use rank booster to boost your rank, using below link.
https://learn.careers360.com/jee-main-rank-booster/?icn=QnA&ici=qna_answer

To see previous year's cut-offs of colleges, use below links.
https://josaa.nic.in/Result/Result/currentorcr.aspx
https://engineering.careers360.com/articles/jee-main-cutoff

To predict colleges use below link.
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

All The Best!!