Procedural terrain generation ?

I've been learning about peling noise for a couple of day's now and i'm trying to create proceduraly generated terrain made out of blocks. In my script i'm trying to generate blocks in all directions but with a different y position (wicth uses simplex noise to calculate it). But I have incountered a problem. When the terrain generates it creates weird formations and the blocks are placed not by 1 unit apart but by 1.4 wicth makes it look uneven. Could someone please help me figure out how to make my terrain look natural? Here's my script:

 using UnityEngine;

public class NoiseTest : MonoBehaviour { public Transform grass;

 public int terrain_size;
 
 public int terrain_hight;
 
 public bool forming_terrain = true;
 
 private void Start()   // Use this for initialization
 {        
     for (int x = 0; x <= 10; x++){
         
         for (int z = 0; z <= 10; z++){
             
             for (int y = 0; y <= 1; y++){
                 
                 if(forming_terrain){
                     
                 //float groundHeight = PerlinSimplexNoise.noise(x*0.001f, z*0.001f, y*0.001f)*64.0f;
                 //float groundHeight = PerlinSimplexNoise.noise(x, z, y)* 5.0f;
             
                 float groundHeight = PerlinSimplexNoise.noise(x, y, z)*1.0f;
                 //groundHeight += PerlinSimplexNoise.noise(x*2.0f, z*2.0f, y*2.0f)*2.0f;

                 //Vector3 random_new_position = new Vector3(x, groundHeight, z);
                 
                 //clone = Instantiate(grass, random_new_position, Quaternion.identity);
                 Instantiate(grass, new Vector3(x, groundHeight, z), Quaternion.identity);
             
                 }
             }
         }
     }
     
     
     
     
 }
 
 private void Update()  // Update is called once per frame
 {

 }

}