creating a procedural sphere

hello, I am trying to create a procedural sphere for a space game, i want a planet that the further you go the less vertices it has. This is most likely not the best way to do it but it was the only way i could think of. It consists of creating a series of circles, both "poles" would be a single vertex, then apropiately conecting the vertices in triangles. the creation of the circles is where I am currently stuck at. to create them i used the following:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class Create_Sphere : MonoBehaviour {
 
     public int lons;
     public int lats;
     public float radius;
 
     public List <Vector3> points = new List<Vector3>();
 
     void Start () 
     {
         CreateCircle();
     }
     void CreateCircle ()
     {
         points.Add(new Vector3(0, 0, 0));
 
         for (int i = 0; i < lons * 2; i++)
         {
 //calculate the angle between points
             float ang = 180/  lons;
 //calculate the points x and z position
             float x = radius * Mathf.Cos(i * ang);
             float z = radius * Mathf.Sin(i * ang);
 //add the points to a List
             points.Add(new Vector3(x, 0, z));
         }
 //visualy display the points
         DisplayPoints();
     }
     void DisplayPoints ()
     {
         for (int i = 0; i < points.Count; i++)
         {
             GameObject dspl = GameObject.CreatePrimitive(PrimitiveType.Cube);
             dspl.transform.position = points [i];
         }
     }
 }

the problem is, though it does create them at an apropiate distance from the center but as if it had the wrong angle, for example, when creating 2, the ang variable says 180 but it seams to create it at 120 or so. but when there are 3, ang var says 120, but they are on something like a 20 deg. no idea what is going on so thanks a lot to everyone for reading this question and sorry for making it so long.

p.s. all i am trying to create for now is the circle