Follow on planet spherical

I did not like fixing this problem. My game takes place on a spherical planet and the enemy must follow the player and then rotate in the direction of the target and according to the spherical shape of the planet

Code (csharp):

1.  
2.  
3. void Update()
4.     {
5.         Vector3 dir = (player.position - enemy.position).normalized;
6.         Vector3 worldDir = (planet.position - enemy.position).normalized;
7.  
8.         float angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
9.         float angleX = Mathf.Atan(worldDir.x) * Mathf.Rad2Deg;
10.  
11.         enemy.position = Vector3.Slerp(enemy.position - planet.position, player.position - planet.position, Time.deltaTime * 0.4f); //il nemico segue il player sullla superficie sferica
12.  
13.         //Quaternion dirWorld = Quaternion.FromToRotation(enemy.transform.up, dir) * enemy.transform.rotation * Quaternion.FromToRotation(enemy.transform.up, worldDir) * enemy.transform.rotation; //rotazione in base al mondo sferico
14.         var dir1 = Quaternion.Euler(0, angle, 0) * Vector3.up;
15.         dir1 = Quaternion.Euler(-angleX, 0,0) * dir1;
16.         enemy.rotation = Quaternion.FromToRotation(enemy.transform.up, dir1)*enemy.rotation;
17.        
18.  
19.     }
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But what exactly is the question you're asking?