AI Enemies?

im looking for information on how to create a simple enemy. nothing special, just one that follows you and kills you on contact. iv’e been having trouble finding a good tutorial, and some of the ones on unity didn’t help. if you know, or know a good tutorial please inform me.

A super simple script would look like:

Transform player;

void Awake()
{
    player = GameObject.FindGameObjectWithTag("Player").transform;
}

void Update()
{
    transform.LookAt(player);
    transform.Translate(Vector3.forward);
}