I want to define when the player touches the ground, some things happen, but it always identifies that it doesn’t come into contact with the ground.
My version of Godot is 4.2.2.

This is my code:
extends CharacterBody2D

var dash = 300.0
var speed = 150.0
var jumpPower = -350.0
var jumpMax = 2
var jumpCount = 0

func _process(delta):
 moviment(delta)
 attack()
 print(is_on_floor())
 move_and_slide()

var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
func _physics_process(delta):

 move_and_collide(Vector2(0, 1))
 velocity.y += gravity * delta
 var motion = velocity * delta
 move_and_collide(motion)
func moviment(delta)
    var direction = Input.get_action_strength("move_right") - Input.get_action_strength("move_left")
if direction != 0:

    $Anim.play("Walk")
    if direction > 0:
        $Anim.flip_h = false
        velocity.x += speed * delta
        velocity.x = clamp(speed, 100.0, speed)
    elif direction < 0:
        $Anim.flip_h = true
        velocity.x -= speed * delta
        velocity.x = clamp(-speed, 100.0, -speed)
else:

    velocity.x = 0
    $Anim.play("Idle")
jump()

func jump():

if is_on_floor() and jumpCount != 0:
    jumpCount = 0
if jumpCount<jumpMax:
    if Input.is_action_just_pressed("move_up"):
        jumpCount += 1
        $Anim.play("Jump")
        velocity.y = jumpPower