am trying to instantiate a 3D object to fly in the direction where my mouse is pointing

am trying to instantiate a 3D object to fly in the direction where my mouse is pointing when i click on the screen, like am shooting but with an object, i've tried 2 different methods that i found online but none of then work, the object just instantiate on a fixed locations, i ran a test and Debug.log(mousePosition) on GetMouseButtonDown(0) and it always return a fixed position, bellow are the 2 different methods i've tried using, i dont know if it matters but there is also a canvas on the scene, i took screenshots of the scene and where the projectiles are spawning on the screen when i click, am new to unity and i can't seen to find an answer that works anywhere

{

 private Vector3 mousePos;
 public GameObject prefab;
 
 void Update()
 {
     if (Input.GetMouseButtonDown(0))
     {
         Vector3 mousepos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         Instantiate(prefab, new Vector3(mousepos.x, mousepos.y, -40), prefab.transform.rotation);
     }
 }

}

 public GameObject prefab;
 public float range = 1000f;
 

 void Update()
 {
     if (Input.GetMouseButtonDown(0))
     {
         shoot();
     }
 }

 void shoot()
 {
     RaycastHit hit;
     Physics.Raycast(Camera.main.transform.position, Camera.main.transform.forward, out hit, range);
     Instantiate(prefab,new Vector3(hit.point.x,hit.point.y,-40), Quaternion.LookRotation(hit.normal));
 }

}