How make the same variable have different values for each object ?

I´m trying to make something that it is similar to a RTS game, when the player click on a object it becomes selected and his name get inside the variable selecionadoPlayer.

My problem is when i select a place for the selecionadoPlayer to go, all the objects (same prefab) go together to the location instead of just him

The solution that i found was write Selecionar.selecionadoPlayer.transform.position = Vector2.MoveTowards(Selecionar.selecionadoPlayer.transform.position, posicao, passo); but this do the object stop and the other object continue to the same place when the selected object change

MoverPlayerRTS.cs

 public class MoverPlayerRTS : MonoBehaviour {
 
     private Vector2 posicao;
     public float speed;
 
     void Start()
     {
         posicao = gameObject.transform.position;
     }
 
     void Update()
     {
         float passo = speed * Time.deltaTime;
         if (Input.GetMouseButtonDown(1) && Selecionar.selecionadoPlayer != null)
         {
             posicao = new Vector2(Camera.main.ScreenToWorldPoint(Input.mousePosition).x, Camera.main.ScreenToWorldPoint(Input.mousePosition).y);
         }
         this.transform.position = Vector2.MoveTowards(this.transform.position, posicao, passo);
     }
 }

Selecionar.cs

 public class Selecionar : MonoBehaviour
 {
 
     public static GameObject selecionadoPlayer;
     public static GameObject selecionadoInimigo;
     public Sprite normal;
     public Sprite selecionado;
     public static Sprite normalInimigo;
     private SpriteRenderer sprender;
 
     void OnMouseOver()
     {
 
 
         //Detectar objetos quando o mouse clicar em cima
         //Convertendo a posição do mouse para um vetor 2d
         if (Input.GetMouseButtonDown(0))
         {
             if (gameObject.tag == "Player")
             {
                 //desseleciona inimigo
                 if (selecionadoInimigo != null)
                 {
                     sprender = selecionadoInimigo.GetComponent<SpriteRenderer>();
                     sprender.sprite = normalInimigo;
                     selecionadoInimigo = null;
                 }
 
                 //Seleciona e desseleciona o jogador
                 if (selecionadoPlayer == null)
                 {
                     selecionadoPlayer = gameObject;
                 }
                 //guarda posicao da ultima ordem
                 sprender = selecionadoPlayer.GetComponent<SpriteRenderer>();
                 sprender.sprite = normal;
                 sprender = gameObject.GetComponent<SpriteRenderer>();
                 sprender.sprite = selecionado;
                 selecionadoPlayer = gameObject;
                 Destruir.trava = false;
             }
         }
         if (Input.GetMouseButtonDown(1))
         {
             if (gameObject.tag == "Celula" && selecionadoPlayer != null)
             {
                 //Seleciona e desseleciona o objeto
                 if (selecionadoInimigo == null)
                 {
                     selecionadoInimigo = gameObject;
                 }
                 sprender = selecionadoInimigo.GetComponent<SpriteRenderer>();
                 sprender.sprite = normal;
                 normalInimigo = normal;
                 sprender = gameObject.GetComponent<SpriteRenderer>();
                 sprender.sprite = selecionado;
                 selecionadoInimigo = gameObject;
             }
         }
     }
 }