How to implement random movement of objects with breaks in Unity?

Question

C++ / C#

I'm trying to script an object with a sprite, it should move along the x-axis in random directions and periodically (again randomly) should stop. I tried to do it through Coroutine but I did some kind of game, help me figure out what I'm doing wrong?

Here's what I did (original)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Villager : MonoBehaviour
{
    [SerializeField] private float speed = 1f; //villager speed
    [SerializeField] private int lives = 3; // villager lives

    private Animator anim;
    private SpriteRenderer sprite;
    private States State
    {
        get { return (States)anim.GetInteger("State"); }
        set { anim.SetInteger("State", (int)value); }
    }
    private void Awake()
    {
        anim = GetComponent<Animator>();
        sprite = GetComponentInChildren<SpriteRenderer>();
    }
    private void Start()
    {
        State = States.idle;
        StartCoroutine(Walk());
    }
    private void Update()
    {

    }
    IEnumerator Walk()
    {
        State = States.walk;
        StartCoroutine(WalkRight());
        yield return new WaitForSeconds(5f);
        StartCoroutine(WalkLeft());
    }
    
    IEnumerator WalkRight()
    {
        Vector3 direction = transform.right * 3f;
        transform.position = Vector3.MoveTowards(transform.position, transform.position + direction, speed * Time.deltaTime);
        sprite.flipX = transform.position.x > 0.0f;
        yield return new WaitForSeconds(4f);
    }
    IEnumerator WalkLeft()
    {
        Vector3 direction = transform.right * -3f;
        transform.position = Vector3.MoveTowards(transform.position, transform.position + direction, speed * Time.deltaTime);
        sprite.flipX = transform.position.x < 0.0f;
        yield return new WaitForSeconds(5f);
    }
    public void GetDamage()
    {
        lives -= 1;
        Debug.Log("Villager" + lives);
    }
    public enum States
    {
        idle,
        walk
    }
}

Answer 1

- Now the Walk coroutine will be executed only once. Repetition is needed for periodicity.
- I do not see an attempt to implement random movement. Now you just walk to the right once and, after a break, once to the left.
I advise you to first clearly define what behavior of the object you want to achieve, and break the task into subtasks.
I see your problem like this:
1. moving a random distance in a random direction
2. pauses of random duration after moving
3. 2 the previous operations are repeated over and over again.
For the first and second points: use Random.Range along the X axis.
For the third point: create a cycle in the coroutine with the number of repetitions of movements + pauses.
Good luck!