User Input

Main.cs

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

public class Main : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        //if space key pressed down  
        //print a message

        if (Input.GetKeyDown(KeyCode.Space))
        {
            Debug.Log("space Key");
        }

        //if ey key held down
        //print message
        if (Input.GetKeyDown(KeyCode.E))
        {
            Debug.Log("Holding E");
        }

        //if f key is lifted up
        //print f

        if (Input.GetKeyUp(KeyCode.F))
        {
            Debug.Log("f");
        }
    }
}

Debug.Log calls may not appear in the the Console by default. Be sure that they are turned on before testing.