Can someone help me rewriting my script from transform.position to transform.Translate?

Hi, I'm pretty new to programming and Unity. So i wanted to make a game object get faster over time until a specific time. And that worked with the script, but I found out that there is no friction if you use transform.position, so I want to change it to transform.Translate because it should work then. But since I'm not very experienced and all I'm not able to do it, I already tried it. Can someone help me to rewrite the script to transform.Translate while retaining its functionality?

 public class PlayerMovement : MonoBehaviour
 {
     public Rigidbody rb;
     public float sidewaysForce;
     public float upwardForce;
 
     public float minSpeed;
     public float maxSpeed;
     public float accelerationTime;
     private float currentSpeed;
     private float time;
 
     void Start()
     {
         currentSpeed = minSpeed;
         time = 0;
     }
 
     void FixedUpdate()
     {
         currentSpeed = Mathf.SmoothStep(minSpeed, maxSpeed, time / accelerationTime);
         transform.position += Vector3.forward * currentSpeed * Time.deltaTime;
         time += Time.deltaTime;
 
         if (Input.GetKey("w")) 
         {
             rb.AddForce(0, upwardForce * Time.deltaTime, 0);
         }
 
         if (Input.GetKey("a"))
         {
             rb.AddForce(-sidewaysForce * Time.deltaTime, 0, 0);
         }
 
         if (Input.GetKey("d"))
         {
             rb.AddForce(sidewaysForce * Time.deltaTime, 0, 0);
         }
 
         if (Input.GetKey("s"))
         {
             rb.AddForce(0, -upwardForce * Time.deltaTime, 0);
         }
 
         Debug.Log(transform.position);
     }
 }