player set to 0 on x-axis on play but in editor its set to -90 on x-axis

//New to coding. I'm stuck tried searching and what not... editor mode player set to -90 X-axis when in Play mode player set to 0 X-axis needs to be set to -90 X-axis in play mode.

 [SerializeField] protected Vector3 m_from = new Vector3(0.0f, 0.0f, 0.0f);
 [SerializeField] protected Vector3 m_to = new Vector3(0.0f, 0.0f, 0.0f);
 [SerializeField] protected float m_frequency = 1.0F;

 public float xSpeed = 0.0f;
 public float ySpeed = 0.0f;
 public float zSpeed = 0.0f;

 // Use this for initialization
 void Start()
 {
     
 }

 // Update is called once per frame
 void Update()
 {
  
     Quaternion from = Quaternion.Euler(this.m_from);
     Quaternion to = Quaternion.Euler(this.m_to);

     float lerp = 0.5F * (1.0F + Mathf.Sin(Mathf.PI * Time.realtimeSinceStartup * this.m_frequency));
     this.transform.localRotation = Quaternion.Lerp(from, to, lerp);

     transform.Rotate(
          xSpeed * Time.deltaTime,
          ySpeed * Time.deltaTime,
          zSpeed * Time.deltaTime);
 }

}