Enemy movement in a game similar do Dodge the Creeps

Hiii, so I’m stucked where I need to spawn enemies from literally any direction and have no idea how to do it. This is the current script, but this makes it only go from side to side like a dvd. And also here are the player and game codes:
Enemy code:

extends Node2D

var speed = 100
var direction = Vector2(1, 0)
@onready var sprite_2d: AnimatedSprite2D = $Sprite2D

func _ready():
	set_direction()

func set_direction():
	var random_direction = Vector2(randf_range(-1, 1), randf_range(-1, 1)).normalized()
	direction = random_direction

func _process(delta):
	position += direction * speed * delta
	
	if speed > 0 and sprite_2d.animation != 'move':
		sprite_2d.animation = 'move'
	if speed == 0 and sprite_2d.animation != 'idle':
		sprite_2d.animation = 'idle'

	if position.x > 800:
		position.x = 800
		direction.x = -direction.x

	if position.x < 0:
		position.x = 0
		direction.x = -direction.x

	if position.y > 600:
		position.y = 600
		direction.y = -direction.y

	if position.y < 0:
		position.y = 0
		direction.y = -direction.y

Player code:

extends Node2D

var speed = 300  

func _process(delta):
	var direction = Vector2.ZERO  
	
	if Input.is_action_pressed("ui_right"):
		direction.x += 1
	if Input.is_action_pressed("ui_left"):
		direction.x -= 1
	if Input.is_action_pressed("ui_down"):
		direction.y += 1
	if Input.is_action_pressed("ui_up"):
		direction.y -= 1

	position += direction.normalized() * speed * delta

Game code:

extends Node2D

var player_area
var enemy_area

func _ready():

	player_area = $Player/Area2D 
	enemy_area = $Enemy/Area2D 

	
	player_area.monitoring = true
	enemy_area.monitoring = true

	
	player_area.connect("area_entered", Callable(self, "_on_player_collision"))
	enemy_area.connect("area_entered", Callable(self, "_on_enemy_collision"))


func _on_player_collision(area: Area2D):
	if area == enemy_area:
		get_tree().paused = true 

func _on_enemy_collision(area: Area2D):
	if area == player_area:
		get_tree().paused = true  

I use godot 4.3 and I tried the Dodge the Creeps code but it had many issues. Can anyone please help?
Képernyőkép 2024-12-21 230245
Képernyőkép 2024-12-21 230314