Returning a player to its original position slowly

Hi, the thing is like a runner in a race, I want to return the player to its original position slowly after being hit by a thing, and after waiting 5 seconds, it returns very slowly but if the players gets hit again the process restarts.

I have this code, the y axis are controlled by the player but the x axis don't, that's why i need to place the code which returns the player to the original position (x=0.y=0)...

     void Update () {
         //float inputY = Input.GetAxis("Vertical");
         //float inputX = 0.0f;
 
         inputY = Input.GetAxis("Vertical");
 
         if(inputY > 0) spriteRenderer.sprite = biplaneSpriteSheet_1;
 
         else if(inputY < 0) spriteRenderer.sprite = biplaneSpriteSheet_2;
 
         else spriteRenderer.sprite = biplaneSpriteSheet_0;
 
         if(inputX < 0.0)
         {
             inputX += 10f; 
             Debug.Log("avanzado 0.5");
         }
 
         movement = new Vector2(
             speed.x * inputX,
             speed.y * inputY);
 
 
     }