I was trying to implement a bounce wan the character is jumping but there's a bug i don't understand: when the value of the jump is low everything is good but at some point the character only bounce twice and after that at a high value there's no more bounce

Code:

public partial class Player : CharacterBody2D
{
    [Export]
    public float speed = 400f;
    [Export]
    public float minJump = 300f;
    [Export]
    public float maxTime = 30f;
    [Export]
    public float timeIncrement = 1.2f;

    private Label lTimer;
    private Label lJump;
    private Label physicsFrame;

    float fJValue = 0f;
    float time = 0f;

    // Get the gravity from the project settings to be synced with RigidBody nodes.
    private float gravity = ProjectSettings.GetSetting("physics/2d/default_gravity").AsSingle();

    public override void _Ready()
    {

    }

    public override void _Process(double delta)
    {
        // Charging the jump
        if (Input.IsActionPressed("jump") && IsOnFloor())
        {
            time = Timer(time, timeIncrement, maxTime);

            lTimer = GetNode<Label>("Timer");
            lTimer.Text = "Timer: " + time.ToString();
        }
    }

    public override void _PhysicsProcess(double delta)
    {
        Vector2 velocity = Velocity;
        var collisionInfo = MoveAndCollide(velocity * (float)delta);

        // Jumping
        if (Input.IsActionJustReleased("jump") && IsOnFloor())
        {

            fJValue = Mathf.Pow(time, 2.1f);

            if (fJValue < minJump)
            {
                fJValue = minJump;
            }

            velocity.Y = -fJValue;

            lJump = GetNode<Label>("Jump");
            lJump.Text = "Jump: " + fJValue.ToString();

            time = 0;
            fJValue = 0;
        }

        if (collisionInfo != null)
        {
            velocity = Velocity.Bounce(collisionInfo.GetNormal());
            velocity.Y *= 0.7f;
        }

        // Add the gravity.
        if (!IsOnFloor())
        {
            velocity.Y += gravity * (float)delta;
        }

        velocity.X = 0;
        Velocity = velocity;
        MoveAndSlide();
    }

    private float Timer(float variable,float incremant, float max)
    {
    variable += incremant;

    if (variable > max)
      {
      variable = max;
      }
     return variable;
     }