Character wont stop Bouncing

I am making my first ever game in Unity a 2D platformer, I am just getting the basic down first and I have run into a problem, My character wont stop bouncing on the floor.
PLEASE HELP

UPDATE,
I removed the floor objects and replaced them now i dont bounce, i just cant jump.

Here is my code, I followed the Muddy wolf Games tutorial:

public class PlayerMovement : MonoBehaviour
{
public float movementSpeed;
public Rigidbody2D rb;

public Animator anim;

public float jumpForce = 20f;
public Transform feet;
public LayerMask groundLayers;

float mx;

private void Update()
{
    mx = Input.GetAxisRaw("Horizontal");

    if (!Input.GetButtonDown("Jump") && IsGrounded())
    {
        Jump();
    }

    if (Mathf.Abs(mx) > 0.05f)
    {
        anim.SetBool("IsRunning", true);
    } else
    {
        anim.SetBool("IsRunning", false);
    }

    anim.SetBool("IsGrounded", IsGrounded());
}

private void FixedUpdate()
{
    Vector2 movement = new Vector2(mx * movementSpeed, rb.velocity.y);

    rb.velocity = movement;
}

void Jump()
{
    Vector2 movement = new Vector2(rb.velocity.x, jumpForce);

    rb.velocity = movement;
}

public bool IsGrounded ()
{
    Collider2D groundCheck = Physics2D.OverlapCircle(feet.position, 0.5f, groundLayers);

    if (groundCheck == null)
    {
        return false;
    }
    return true;
}

}

Try changing the gravity on the player to 5. That worked for me.