What’s the best smartphone under ₹40,000 right now for camera and battery?

Next month, I'm going on an educational tour through my university. It’s going to be a longer trip for at least a week. I’m planning to buy a new smartphone to make my journey easier and avoid draining my battery quickly. Are there any suggestions for smartphones under Rs. 40,000? Not looking for the most enhanced AI features, my priorities are a good-quality camera and longer battery life.