unity find child object by name code example
Example 1: find child of gameobject unity
gameObject.transform.Find("ChildGameObject").gameObject;
//This insures that you are finding the child instead of finding another
//GameObject's Child.
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>();
Example 3: get gameobject child by name
Gameobject.Find("ChildName") ;