Doesn't switch True False. What to do?

Question

C++ / C#

spoiler

using System.Collections; 
using System.Collections.Generic; 
using UnityEngine; 
 
public class RotateTank2 : MonoBehaviour 
{ 
 
 
 public Transform Selftransform;  
 
 public int speed = 6; 
 
 public bool rotate = true;
 
 
 
 
 // Use this for initialization 
 void Start() 
 { 

 
 } 
 void RightRotate() 
 { 
 transform.Rotate(0, 0, -3); 
 } 
 void LeftRotate() 
 { 
 transform.Rotate(0, 0, 3); 
 } 
 // Update is called once per frame 
 void FixedUpdate() 
 { 
 
 
 if (rotate == true && !Input.GetKey(KeyCode.D)) 
 { 
 RightRotate(); 
 
 } 
 
 if (rotate == false && !Input.GetKey(KeyCode.D)) 
 { 
 LeftRotate(); 
 
 } 
 
 if (Input.GetKey(KeyCode.D))
 
 
 rotate = !rotate; 
 
 Selftransform.position += Selftransform.up * speed * Time.deltaTime; 
 
 } 
 else 
 { 
 
 } 
 
 } 
}

I made a unit switch that, when pressed, changes the direction of rotation, but it does not work. Sometimes it switches, and sometimes it does not. Tell me what's wrong?

Answer 1

Input.GetKey(KeyCode.D)
here is the main problem. except for the hodgepodge of flags that confuse you))
read how
GetKey
GetKeyDown
GetKeyUp differs.
and understand. that GetKey - can work several times per frame.
and another important point is to do INPUT on Update (each card for responsiveness and adequacy).
not on FixedUpdate (this is for physics)