Need a laptop under 45k-50k inr (budget can't really move up the price)

Budget: (₹45,000)
Country: (India)
Use Case: (Gaming - No, for college use i.e notes, pdf, coding, daily use)
Preferred Specs: (whichever best I can get in this price range, i have absolutely no idea about specs)
Notes: (i want the laptop to last for 4-5 years, should run smoothly even in 3rd year of purchase, strong performance, no hang in b/w and stuff. I am going to get core branch in T1 clg (mech,civil,chem engg), so I will have to code along with my main coursework, hence laptop should handle decent or moderate codes and coding programmes. Also, it should be light weight (easy to carry), have a good battery life and battery shouldn't drain out fast after certain time of purchase, no specific brand biased Thanks! )