Help on Player Movement Script C#

Hi, I'm having some difficulties with moving script. Wanted behavior is that Player object can move in all directions, and gravity is 0. Also speed of the object should decrease slowly, so I tried to accomplish that with drag.

What happens is this, if i set it too low, object just goes and needs few seconds to fully stop, but if I put it higher it stops almost instantly, and something in the middle looks pretty strange.

Is there a better way to accomplish this?

void FixedUpdate () {

     if (Input.GetKey(KeyCode.W)) {
         rigidbody2D.AddForce(Vector2.up * forceConstant);
         animator.SetFloat("verticalSpeed", 1);
     } else if (Input.GetKey(KeyCode.S)) {
         rigidbody2D.AddForce(Vector2.up * -forceConstant);
         animator.SetFloat("verticalSpeed", 1);
     }                
     
     if(Input.GetKey(KeyCode.A)){
         rigidbody2D.AddForce(Vector2.right * -forceConstant);
         animator.SetFloat("horizontalSpeed", 1);
     }else if(Input.GetKey(KeyCode.D)){
         rigidbody2D.AddForce(Vector2.right * forceConstant);
         animator.SetFloat("horizontalSpeed", 1);
     }
     
     if(Input.GetKeyUp(KeyCode.W))
     {
         animator.SetFloat("verticalSpeed", 0);
         rigidbody2D.drag = 25f;
     }
     if(Input.GetKeyUp(KeyCode.A))
     {
         animator.SetFloat("horizontalSpeed", 0);
         rigidbody2D.drag = 25f;
     }
     if(Input.GetKeyUp(KeyCode.S))
     {

         animator.SetFloat("verticalSpeed", 0);
         rigidbody2D.drag = 25f;
     }
     if(Input.GetKeyUp(KeyCode.D))
     {
         animator.SetFloat("horizontalSpeed", 0);
         rigidbody2D.drag = 25f;
     }


 

 }