Transplanting

Answer 1

Droopy leaves after transplanting are very common, and the plant will likely recover if it's watered every day until it is established:

https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm

Overwatering is less likely with plants planted in the ground, unless your drainage is quite poor. In that case you would see water puddling and taking a long time to soak into the soil.