I trying to make the player not to reduce speed when jumping

extends CharacterBody2D

@export var speed = 300
@export var gravity = 30
@export var jump_force = 300
@export var crouching_speed = 150
@onready var crouch_raycast1 = $CrouchRaycast_1
@onready var crouch_raycast2 = $CrouchRaycast_2

@onready var ap = $AnimationPlayer
@onready var sprite = $Sprite2D
@onready var cshape = $CollisionShape2D

var is_crouching = false
var stuck_under_object = false

var standing_cshape = preload("res://Resources/player_Standing_Collision_Shape.tres")
var crouching_cshape = preload("res://Resources/player_crouching_Collision_Shape.tres")



func _physics_process(delta):
	if !is_on_floor():
		velocity.y += gravity
		if velocity.y> 1000:
			velocity.y = 1000
	
	
	if Input.is_action_just_pressed("jump"): #&& is_on_floor():
		velocity.y = -jump_force
	
	var horizontal_direction = Input.get_axis("move_left","move_right")
	velocity.x = speed * horizontal_direction
	
	if horizontal_direction != 0:
		sprite.flip_h = (horizontal_direction == -1)
	
	if Input.is_action_just_pressed("crouch"):
		crouch()
		
	elif  Input.is_action_just_released("crouch"):
		if above_head_is_empty():
			stand()
		else: 
			if stuck_under_object != true:
				stuck_under_object = true
				print("Player stuck under")
	
	if stuck_under_object && above_head_is_empty():
		if !Input.is_action_just_pressed("crouch"):
			stand()
			stuck_under_object = false
			print("Player was stuck")
	
	if is_crouching:
		velocity.x = crouching_speed * horizontal_direction
	
	move_and_slide()
	
	

	update_animation(horizontal_direction)


func above_head_is_empty() -> bool:
	var result = !crouch_raycast1.is_colliding() && !crouch_raycast2.is_colliding()
	return result

func update_animation(horizontal_direction):
	if is_on_floor():
		if horizontal_direction == 0:
			if is_crouching:
				ap.play("Crouch")
			else:
				ap.play("Idle")
		else:
			if is_crouching:
				ap.play(("Crouch_Walk"))
			else:
				ap.play("Run")
	else:
		if velocity.y < 0:
			ap.play("Jump")
		elif  velocity.y > 0:
			ap.play("Fall")

func crouch():
	if is_crouching:
		return
	is_crouching = true
	cshape.shape = crouching_cshape
	cshape.position.y = -67
func stand():
	if is_crouching ==false:
		return
	is_crouching = false
	cshape.shape = standing_cshape
	cshape.position.y = -75