Solar Falcon's Bullet Class

using UnityEngine;

namespace _Scripts
{
    public class ParticleBullet : MonoBehaviour
    {
        public float speed = 5f;
        private Vector3 direction;
        [SerializeField] Collider[] colliders;
        [SerializeField] GameObject[] particleSystems;
        [SerializeField] GameObject hitEffect = null;
        Rigidbody rb;
        private bool active;
        public int bulletPower = 1;
        private float lifeTimer;
        [SerializeField] float lifeTime = 4f;


        private void Awake()
        {
            rb = GetComponent<Rigidbody>();
        }

        void OnEnable()
        {
            lifeTimer = lifeTimer;
        }

        public void SetBullet(Vector3 direction, float speed)
        {
            this.direction = direction;
            this.speed = speed;
        }

        public void SetDirection(Vector3 dir)
        {
            direction = dir.normalized;
        }

        public void SetSpeed(float value)
        {
            speed = value;
        }

        void Update()
        {
            lifeTimer -= Time.deltaTime;
            if (lifeTimer <= 0 && active)
            {
                var newpos = Vector3.forward * 1000;
                transform.position = newpos;
                Activate(false);
            }
            transform.position += direction * (speed * Time.deltaTime);
            RotateTowardsHeading();
        }

        void RotateTowardsHeading()
        {
            if (direction != Vector3.zero)
            {
                Quaternion targetRotation = Quaternion.LookRotation(direction, Vector3.up);
                transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * 1000f);
            }
        }


        /// <summary>
        /// Activate/Inactivate Bullet
        /// </summary>
        public void Activate(bool isActive)
        {
            active = isActive;

            rb.detectCollisions = isActive;

            if (colliders != null && colliders.Length > 0)
            {
                for (int i = 0; i < colliders.Length; i++)
                {
                    colliders[i].enabled = active;
                }
            }

            if (particleSystems != null && particleSystems.Length > 0)
            {
                for (int i = 0; i < particleSystems.Length; i++)
                {
                    particleSystems[i].SetActive(active);
                }
            }

            if (!isActive)
            {
                if (hitEffect != null)
                {
                    GameObject obj = ObjectPool.instance.SpawnPrefab(hitEffect);
                    obj.transform.position = transform.position;
                    obj.transform.rotation = Quaternion.identity;
                }
                ObjectPool.instance.ReturnToPool(gameObject);
            }
        }
        private void OnCollisionEnter(Collision collision)
        {
            Collider collider = collision.collider;
            if (collider.CompareTag("Enemy")
                || collider.CompareTag("Player"))
            {
                // Damage the enemy
                IDamageable damageable = collider as IDamageable;
                if (damageable != null)
                {
                    damageable.OnBulletStrike(bulletPower);
                }
                Activate(false);
            }
        }
    }
}