Move an object in X & Z axis with input controller

//First need to add rigid body on player game object & remember to unchecked gravity on rigid body
//you can move your character using unity default keys (WASD or arrow keys)

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

public class taichi : MonoBehaviour
{
     public float walkingspeed = 1;
 
     void FixedUpdate ()
     {
         float moveHorizontal = Input.GetAxis ("Horizontal");
         float moveVertical = Input.GetAxis ("Vertical");
 
         Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
         GetComponent<Rigidbody>().velocity = movement * walkingspeed;
 }
}