Player Can Not get off platform

Questions & Answers
1

Okay so far I have been able to get my player to move with the platform. But there seems to be a problem to when the player is a child of the platform the player can not move what so ever. Below you will see my code. Any help will be appreciated.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerMovment : MonoBehaviour {

    public float speed = 10f;
    public Rigidbody rb;


	// Use this for initialization
	void Start () {
        rb = GetComponent<Rigidbody>();
	}
	
	// Update is called once per frame
	void FixedUpdate () {
        // Below is player movment
        float h = Input.GetAxis("Horizontal");
        float v = Input.GetAxis("Vertical");

        Vector3 movement = new Vector3(h,0f,v);
        rb.AddForce(movement * speed);
	}

    // Hooks player up to plat form after hook up player can not move on own
    private void OnTriggerStay(Collider other)
    {
        if (other.gameObject.tag == "plat")
        {
            transform.parent = other.transform;
        }
    }

    // see if the player left the trigger
    private void OnTriggerExit(Collider other)
    {
       if (other.gameObject.tag == "plat")
        {
            transform.parent = null;
        }
    }
}
2

I don’t think that using children and parents is the best solution here. Can you give me some more context?