bullet doesn't go anywhere

I made the following script and attached it to my gun, which has a child that is located at the barrel named launch. using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Shoot : MonoBehaviour {

private float shootTimer; public float fireRate; [SerializeField] private GameObject launch; [SerializeField] private GameObject bullet; private Vector3 launchLocation;

 void Start()
 {
     fireRate = 0.5f;
     launchLocation = launch.transform.position;
 }

 // Update is called once per frame
 void FixedUpdate()
 {
     if(Input.GetMouseButton(0))
     {
         if(shootTimer < 0.1f)
         {
             Instantiate(bullet, launchLocation, Quaternion.identity);
             shootTimer = fireRate;
         }
         else{
             shootTimer = shootTimer - 0.1f;
         }
     }
 }

}

Then I have the bullet as a prefab that the gun Instantiates that has this script: using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Bullet : MonoBehaviour { [SerializeField] private float speed; [SerializeField] private float startz; [SerializeField] private float currentz; [SerializeField] private float range; void Start() { startz = transform.position.z; speed = 10f; }

 // Update is called once per frame
 void FixedUpdate()
 {
     transform.position += new Vector3(0,0,1);
     currentz = transform.position.z;
     if(currentz > startz + range)
     {
         Destroy(this);
     }
 }

} now, this spawns the bullets stacked on the ground and they don't move at all. This is a early version of the game and this is just about the only thing in the scene besides a capsule representing the player and a camera, well, being a camera. Pls Help. Btw, the serialize field is for debug and won't always be there if that helps.