You have very good rank in UPSEE so you have many choices for the govt. colleges where you can strat with your course. It is a long list of the various colleges and I am sharing you a link where you can see the best colleges for MBA in UP and you can choose from them.

https://bschool.careers360.com/colleges/list-of-government-mba-colleges-in-uttar-pradesh

I am also suggesting some of the best govt. institutes in UP so thet you can easily select for the list.

• IIM, Lucknow
  
• IIT, Kanpur
  
• Motilal Nehru National Institute of technology, Allahabad
  
• Institute of management studies, Banaras Hindu Unversity, Varansi