How can I translate my arrow keys input to my controller joystick?

Here is my player movement script, how can I make this movement be done by controller joystick as well?

using UnityEngine;

public class PlayerMovement : MonoBehaviour { //On crée un slot pour le rigidbody, on l'appelle rb puis dans unity on le glisse dedans

 public LayerMask groundLayers;
 public Rigidbody rb;
 public float forwardForce = 40f;
 public float sidewaysForce = 25f;
 public float forwardInair = 300f;
 public float sidewaysInair = 300f;
 public float jumpForce = 12f;
 public SphereCollider col;
 public float sideForceController = 2f;
 public float sideAirForceController = 1f;



 // Update is called once per frame
 void FixedUpdate()
 {
     Cursor.visible = false;


       
     // the force that pushes straight forward
     if (IsGrounded())
         {
         rb.AddForce(0, 0, forwardForce, ForceMode.Force);
     }
     else
         {
         rb.AddForce(0, 0, forwardInair, ForceMode.Force);
     }
                 
     
     //go right
     if (IsGrounded())
       {
           
           if (Input.GetKey(KeyCode.RightArrow))
             {
           rb.AddForce(sidewaysForce * Time.deltaTime, 0, 0,ForceMode.Impulse);

             }
       }
       else
        if (Input.GetKey(KeyCode.RightArrow))
     {
           rb.AddForce(sidewaysInair * Time.deltaTime, 0, 0, ForceMode.Acceleration);
       }
       //go left
       if (IsGrounded())
       { 
           if (Input.GetKey(KeyCode.LeftArrow))
         {
           rb.AddForce(-sidewaysForce * Time.deltaTime, 0, 0, ForceMode.Impulse);
               }
       }
       else
       {
           if (Input.GetKey(KeyCode.LeftArrow))
         {
               rb.AddForce(-sidewaysInair * Time.deltaTime, 0, 0, ForceMode.Acceleration);
           }
       }
       
       //jump

       if (IsGrounded() && Input.GetKey(KeyCode.Space))

       {
           rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
       }
     //jump with controller
   if (IsGrounded() && Input.GetKey(KeyCode.Joystick1Button0))

   {
       rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
   }
   
   
     if (rb.position.y < -10f)
       {
           FindObjectOfType<GameManager>().EndGame();
       }
       
      
 }

 //to check if grounded
 private bool IsGrounded()
 {
     return Physics.CheckCapsule(col.bounds.center, new Vector3(col.bounds.center.x,
             col.bounds.min.y, col.bounds.center.z), col.radius * .9f, groundLayers);

 }

}