Due to Time.deltatime, the player's movement distance is not controlled, what should I do?

Question

Unity

Hello! I'm making a game and I need the character to move smoothly on the grid, I made the following code

public float Speed;

    private Rigidbody2D _rigibody2D;


    void Start()
    {
        _rigibody2D = GetComponent<Rigidbody2D>();
    }

    
    void FixedUpdate()
    {
        if (Input.GetKeyDown(KeyCode.S)) {  
            transform.Translate(new Vector2(0.0f , -Speed * Time.deltaTime));
        }
    }

After pressing the S button, the character moves to the distance specified in Speed, well, everything works, but only he does it very abruptly, so I added Time.deltaTime, after which the character began to move smoothly, but the distance
changes, for example: 0.245 or 0.753 ( this is after subtracting the number from Speed, (the numbers are invented 0.245 and 0.753)) FixedUpdate works at a certain point (not like Update) after moving, to move again you have to wait about 1 second before moving again, I would like to not have this delay, but because of Update, the old problem reappears. What can be done to solve my problem?

Answer 1

Do not use Inputin FixedUpdateread the documentation.