unity get object child by name code example
Example 1: unity how to get a child from a gameobject
//For unity engine
GameObject.transform.GetChild(The child index).transform;
Example 2: Unity find component from child object
//Returns the component of Type type in the GameObject or
//any of its children using depth first search.
//A component is returned only if it is found on an active GameObject.
Transform transform = GetComponentInChildren<Transform>();