Enemies in top down shooter being affected by physics of bullet

I am happy to give scripts if you guys want them, but this seems like the kind of thing that can be fixed with unity's built in system. Just in case, here's the bullet script:

     public float speed;
     public GameObject hitEffect;
 
     private Transform player;
     private Vector2 target;
 
     void Awake()
     {
 
         player = GameObject.FindGameObjectWithTag("Enemy").transform;
 
         target = new Vector2(player.position.x, player.position.y);
 
     }
 
     void Update()
     {
         transform.Translate(Vector2.up * speed * Time.deltaTime);
     }
 
     void OnCollisionEnter2D(Collision2D collision)
     {
         GameObject effect = Instantiate(hitEffect, transform.position, Quaternion.identity);
         Destroy(effect, 5f);
         Destroy(gameObject);
     }