Random but soothing movement Unity C# script

SpinAround.cs

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

public class SpinAround : MonoBehaviour
{
    public float rotX, rotY, rotZ;
    public float moveScale;
    public Vector3 changeSpeed = Vector3.one;
    private Rigidbody rb;
    private Vector3 progression;
    
    private void Awake() {
        this.rb = GetComponent<Rigidbody>();
    }

    private void UpdateAngularVelocity() {
        this.rb.angularVelocity = new Vector3(
            rotX*Mathf.Sin(progression.x),
            rotY*Mathf.Cos(progression.y),
            rotZ*(Mathf.Cos(progression.z)+Mathf.Sin(progression.z))
        );
    }

    void UpdatePosition() {
        Vector3 currentPosition = transform.position;
        Vector3 magnetPosition = moveScale * new Vector3(
            rotX*Mathf.Sin(progression.x),
            rotY*Mathf.Cos(progression.y),
            rotZ*(Mathf.Cos(progression.z)+Mathf.Sin(progression.z))
        );
        Vector3 newPosition = Vector3.Lerp(currentPosition, magnetPosition, Time.deltaTime*2);
        transform.position = newPosition;
    }

    void Update()
    {
        UpdateAngularVelocity();
        UpdatePosition();
        progression += Time.deltaTime * changeSpeed;
    }
}