Input keys not working ! please help me,Can't use input keys ! please help me !

Hey guys , i cant use input keys , everything seemed to be okay and i checked setting and inputs are default and okay , and i used keyboard and mouse for setting , this is my code :

 public class PlayerMovment : MonoBehaviour
 {
     public CharacterController2D controller;
 
     public float runSpeed = 40f;
 
     float horizontalMove = 0f;
     bool jump = false;
     bool crouch = false;
 
     // Update is Called once per frame
      void Update()
     {
         horizontalMove = Input.GetAxisRaw("Horizontal") * runSpeed;
 
         if (Input.GetButtonDown("Jump"))
         {
             jump = true;
         }
 
         if (Input.GetButtonDown("Crouch"))
         {
             crouch = true;
         } else if (Input.GetButtonUp("Crouch"))
         {
             crouch = false;
         }
        
     }
 
     void FixedUpdated ()
     {
         //Move our character
         controller.Move(horizontalMove * Time.fixedDeltaTime, crouch, jump);
         jump = false;
     }



 please help me , this is my school project

,Hey guys , I can't use input keys in unity ! this is my code

 public class PlayerMovment : MonoBehaviour
 {
     public CharacterController2D controller;
 
     public float runSpeed = 40f;
 
     float horizontalMove = 0f;
     bool jump = false;
     bool crouch = false;
 
     // Update is Called once per frame
      void Update()
     {
         horizontalMove = Input.GetAxisRaw("Horizontal") * runSpeed;
 
         if (Input.GetButtonDown("Jump"))
         {
             jump = true;
         }
 
         if (Input.GetButtonDown("Crouch"))
         {
             crouch = true;
         } else if (Input.GetButtonUp("Crouch"))
         {
             crouch = false;
         }
        
     }
 
     void FixedUpdated ()
     {
         //Move our character
         controller.Move(horizontalMove * Time.fixedDeltaTime, crouch, jump);
         jump = false;
     }
 }

After Writing these i hit play but i cant control my player ! please help me this is my school project please !