I cant get my projectiles to do damage or keep them from going through my player

see i been at this for 3 days and im trying to get my enemy to hurt me. i got him to shoot sphere projectiles but cant get it to do damage at all. this is all the codes i have.`

using System; using UnityEngine; using UnityEngine.AI;

public class enemyhurtsyou : MonoBehaviour { public NavMeshAgent agent;

 public Transform player;

 public LayerMask whatIsGround, whatIsPlayer;

 public float health;
 //patroling
 public Vector3 walkPoint;
 bool walkPointSet;
 public float walkPointRange;

 //attacking you fuck
 public float timeBetweenAttack;
 bool alreadyAttacked;
 public GameObject projectiles;

 internal void takeDamage(float damage)
 {
     throw new NotImplementedException();
 }

 //states
 public float sightRange, attackRange;
 public bool playerInSightRange, playerInAttackRange;

 private void Awake() 
 {
     player = GameObject.Find("player").transform;
     agent = GetComponent<NavMeshAgent>(); 
 }

 private void Update()
 {
     //checxk for sight and attack range
     playerInSightRange = Physics.CheckSphere(transform.position, sightRange, whatIsPlayer);
     playerInAttackRange = Physics.CheckSphere(transform.position, attackRange, whatIsPlayer);


     if (!playerInSightRange && !playerInAttackRange) Patroling();
     if (playerInSightRange && !playerInAttackRange) ChasePlayer();
     if (playerInSightRange && playerInAttackRange) AttackPlayer();
 }

     private void Patroling()
     {
         if (!walkPointSet) SearchWalkPoint();

         if (walkPointSet)
             agent.SetDestination(walkPoint);

         Vector3 distanceToWalkPoint = transform.position - walkPoint;

         //walkpoint reached
         if (distanceToWalkPoint.magnitude < 1f)
             walkPointSet = false;

     }

     private void SearchWalkPoint()

     {
         //calculate random point in range
         float randomZ = UnityEngine.Random.Range(-walkPointRange, walkPointRange);
         float randomX = UnityEngine.Random.Range(-walkPointRange, walkPointRange);

         walkPoint = new Vector3(transform.position.x + randomX, transform.position.y, transform.position.z + randomZ);

         if (Physics.Raycast(walkPoint, -transform.up, 2f, whatIsGround))
             walkPointSet = true;
     }



     private void ChasePlayer()
     {
         agent.SetDestination(player.position);


     }


     private void AttackPlayer()
     {
         //make sure enemy doesnt move
         agent.SetDestination(transform.position);

         transform.LookAt(player);

         if (!alreadyAttacked) 
         {
             Rigidbody rb = Instantiate(projectiles, transform.position, Quaternion.identity).GetComponent<Rigidbody>();
             
         //
         
         
         rb.AddForce(transform.forward * 32f, ForceMode.Impulse);
             rb.AddForce(transform.up * 8f, ForceMode.Impulse);
            //
             
             alreadyAttacked = true;
             Invoke(nameof(ResetAttack), timeBetweenAttack);
         
         }
     }

     private void ResetAttack()
     {
         alreadyAttacked = false;

     }
 public void TakeDamage(int damage) 
 {
     health -= damage;

     if (health <= 0) Invoke(nameof(DestroyEnemy), .5f);
 
 
 
 }
 private void DestroyEnemy() 
 {
     Destroy(gameObject);
 
 }

 private void OnDrawGizmosSelected() 
 
 {
     Gizmos.color = Color.red;
     Gizmos.DrawWireSphere(transform.position, attackRange);
     Gizmos.color = Color.yellow;
     Gizmos.DrawWireSphere(transform.position, sightRange);
 
 
 }

}

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class playerhealth : MonoBehaviour
 {
     public int maxHealth = 100;
     public int currentHealth;
 
     public HealthBar healthBar;
 
    
 
     // Start is called before the first frame update
     void Start()
     {
         currentHealth = maxHealth;
         healthBar.SetMaxHealth(maxHealth);  
     }
 
     internal void takeDamage(float damage)
     {
         throw new NotImplementedException();
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.GetKeyDown(KeyCode.Space)) 
         {
             TakeDamage(5);
         }
 
         if (currentHealth <= 0) 
         {
             Destroy(this.gameObject);
         }
     
     }
 
   
 
 
     void TakeDamage(int damage) 
     {
         currentHealth -= damage;
 
         healthBar.SetHealth(currentHealth);
     }
 }
 

 using System.Collections.Generic;
 using UnityEngine;
 
 public class bullet : MonoBehaviour
 {
     public float lifeTime = 3;
 
 
     private void OnTriggerEnter(Collider other) 
     {
         print("hit" + other.name + "!");
         
     }
 
 
 }

im super new to this so im very lost. please help me on this.d