LookAtTarget2D

using UnityEngine;

public class LookAtTarget2D : MonoBehaviour
{
    [SerializeField] private Transform _target;
    [SerializeField] private Vector3 _worldUp = Vector3.up;

    private void Update()
    {
        Vector2 direction = _target.position - transform.position;
        transform.rotation = Quaternion.FromToRotation(_worldUp, direction);
    }
}