According to my research, the cost of maintaining a used Hybrid model older than 2020 is not worth the savings in fuel. You will have to spend a lot in maintaining the car.
I suggest you stick with MG Z as newer model hybrid sedans and crossovers cost near 1 crore.
You can buy 2021 model Toyota Aqua, Toyota Sienta, and Nissan Note models for about 46 - 55 lacs, but it will be a downgrade for you since they are hatchbacks.