Reasons for Curled Leaves on Dracaena and How to Fix Them
1. Overwatering
Many of the problems that appear on this plant's leaves are related to watering. This is not only true for this plant - other plants are the same. If too much water is given and the water cannot drain out smoothly, the potting soil will remain in a wet state for a long time. At this point the plant's roots cannot normally absorb nutrients and water from the soil, and its leaves will naturally become curled.
Solution: First move it to a spot with better ventilation and let it sit there for a while. If it is planted in a tall, slender glazed ceramic pot, consider switching to a short unglazed clay pot. This is very beneficial for its growth, because unglazed clay pots have good breathability.
2. Too Much Sunlight
Although it is suited to growing in conditions with ample light, overly strong light will cause its leaves to curl.
Solution: If you don't want to move its position, you can provide some shade from the sunlight around midday. Outside of the noon period, there is no need to shade it.
3. Dry Environment
It neither likes a humid environment nor an overly dry one. When kept in a humid state for a long time, its leaves will wilt, and when kept in a dry environment for a long time, its leaves will curl.
Solution: You can mist its leaves with a little water, and at the same time sprinkle some water on the ground around it to ease the overly dry environmental conditions.
The above refers to simple leaf curling. If spots appear on the leaf surface, then you need to consider whether pests or diseases have occurred.