Player

If InputsPlayer is not your main player class.

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

namespace MyProject {
    public class Player : MonoBehaviour {
        public InputsPlayer InputsPlayer = new InputsPlayer();

        void Start() {
            // if player loses his controller, remove the gameObject
            InputsPlayer.OnControllerChange += () => {
                if (InputsPlayer.Controller == null) {
                    Destroy(gameObject);
                }
            };

            // visibility
            GameObject.CreatePrimitive(PrimitiveType.Cube).transform.SetParent(transform);
        }

        void Update() {
            transform.position += (Vector3)(InputsPlayer.Move*0.1f);
        }
    }
}