[Improvement] change image based on set value

Hello everybody!
I'm very much new to Unity and wrote a little script to change an image based on a set value. The script itself works fine and i'm very happy with it. Looking at the amount of code though i wondered, if there's a more efficient way to achieve what i want it to do. Any suggestions or a little push into the right direction would be great.
Thanks in advance.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class StarsDisplayScript : MonoBehaviour
 {
     public Image img1;
     public Image img2;
     public Image img3;
 
     int Skills;
 
     void Start()
     {
         // create random number between 1-5 (note: has to be changed to set value from persistent data later)
         Skills = Random.Range(1, 6);
         Debug.Log("the random number is: " + Skills);
 
         // change image (from Resources-folder) based on set value
         if (Skills == 1)
         {
             img1.sprite = Resources.Load<Sprite>("bronze_1");
         }
 
         else if (Skills == 2)
         {
             img1.sprite = Resources.Load<Sprite>("bronze_2");
         }
 
         else if (Skills == 3)
         {
             img1.sprite = Resources.Load<Sprite>("bronze_3");
         }
 
         else if (Skills == 4)
         {
             img1.sprite = Resources.Load<Sprite>("bronze_4");
         }
 
         else if (Skills == 5)
         {
             img1.sprite = Resources.Load<Sprite>("bronze_5");
         }
     }
 }