Instantiated objects always facing the center

LookRotation takes a direction not a position. You can solve your problems one of two ways. Either you can use Transform.LookAt() (w$$anonymous$$ch does take a postion), or you can calculate a direction vector for LookRotation(). If the position to look at is always the origin (Vector3.zero), then you can use the negated position you use for placing your object. Without seeing your code, it is hard to be specific, but say you place one of the arrows at (0,0,5). You could do somet$$anonymous$$ng like:

 var pos = Vector3(0,0,5);
 Instantiate(prefab, pos, Quaternion.LookRotation(-pos));

Again, the LookRotation() will take the negative of whatever position you use to place your Instantiated object.

i know t$$anonymous$$s is an old post but if anyone still needs to do somet$$anonymous$$ng similar here is some code.

void DrawCircleVectors(int points, float radius, Transform center1) { float slice = 2 Mathf.PI / points; for (int i = 0; i < points; i++) { float angle = slice i; float newX = (float)(center1.position.x + radius Mathf.Cos(angle)); float newz = (float)(center1.position.z + radius Mathf.Sin(angle)); Vector3 p = new Vector3(newX, center1.position.y, newz); GameObject go = Instantiate(prefab,p,Quaternion.LookRotation(p,center1.position)); go.transform.SetParent(center1); } }