Hey guys,
I just wanted to present my code. Maybe its not the best and we are going into another direction but I worked it out without help and it worked pretty well. I was annoyed by the enemy trying to run “into” me and pushing me away so I also set a minimum distance. A big thanks to the guys from the tutorials and keep the good work up 
namespace RPG.Control {
public class AIController : MonoBehaviour
{
[SerializeField] float chaseDistance = 5f;
[SerializeField] float minimumRange = 1f;
private void Update() {
GameObject player = GameObject.FindGameObjectWithTag("Player");
float playerDistance = Vector3.Distance(transform.position, player.transform.position);
if (playerDistance < chaseDistance && playerDistance > minimumRange)
{
ChasePlayer(player);
}
}
private void ChasePlayer(GameObject player)
{
transform.LookAt(player.transform.position);
GetComponent<NavMeshAgent>().destination = player.transform.position;
}
}
}