How can I prevent the character from jumping if there is an object above them?

I'm creating t$$anonymous$$s first person game, the character can crouch and jump, when you're crouc$$anonymous$$ng and there's an object above you, if you try to uncrouch not$$anonymous$$ng happens, I do t$$anonymous$$s using a raycast upwards to check if $$anonymous$$ts somet$$anonymous$$ng, now the problem is i'm using the exact same method with jumping but it's not working, if you jump and there's an object above you, the character clips through and gets stuck. Idk if the problem is in the code or the player jumps too fast the object doesn't recognise it and the player gets stuck.Here's my code.

 private void HandleJumping()
     {
         if (shouldJump && !Physics.Raycast(characterController.transform.position, Vector3.up, 0.5f))
         {
             moveDirection.y = jumpForce;
         }            
     }
 private void HandleCrouc$$anonymous$$ng()
     {
         if (shouldCrouch)
             StartCoroutine(CrouchStand());
         if (isCrouc$$anonymous$$ng && shouldJump && !Physics.Raycast(characterController.transform.position, Vector3.up, 0.5f))
             BreakCrouchOnJump();
     }
     private void BreakCrouchOnJump()
     {
         characterController.height = standingHeight;
         characterController.center = standingCenter;
         isCrouc$$anonymous$$ng = false;
     }
     private IEnumerator CrouchStand()
     {
         if (isCrouc$$anonymous$$ng && Physics.Raycast(playerCamera.transform.position, Vector3.up, 0.5f))
             yield break;
 
         duringCrouc$$anonymous$$ngAnimation = true;
 
         float timeElapsed = 0;
         float targetHeight = isCrouc$$anonymous$$ng ? standingHeight : crouc$$anonymous$$ngHeight;
         float currentHeight = characterController.height;
         Vector3 targetCenter = isCrouc$$anonymous$$ng ? standingCenter : crouc$$anonymous$$ngCenter;
         Vector3 currentCenter = characterController.center;
 
         w$$anonymous$$le (timeElapsed < timeToCrouch)
         {
             characterController.height = Mathf.Lerp(currentHeight, targetHeight, timeElapsed / timeToCrouch);
             characterController.center = Vector3.Lerp(currentCenter, targetCenter, timeElapsed / timeToCrouch);
             timeElapsed += Time.deltaTime;
             yield return null;
         }
 
         characterController.height = targetHeight;
         characterController.center = targetCenter;
 
         isCrouc$$anonymous$$ng = !isCrouc$$anonymous$$ng;
 
         duringCrouc$$anonymous$$ngAnimation = false;
     }