In hits = pygame.sprite.spritecollide(fallschirme,bullets,False) i get the message sprite.rect.colliderect AttributErros and 'Group' object has no attribute 'rect'. The relevant code is listed below. i looked similar question but i didn't find something simular.
 class Fallschirm(pygame.sprite.Sprite):       
        def __init__(self,x,y):
            pygame.sprite.Sprite.__init__(self)   
            self.image = pygame.image.load("Bilder/fallschirm.png").convert_alpha()
            self.image = pygame.transform.scale(self.image,(100,150))
            self.rect = self.image.get_rect()
            self.rect.x = x
            self.rect.y = y
    
        def update(self):
            self.rect.y  +=2
            if self.rect.y > hoehe:
                self.kill()  
    
     def absprung(self):    #Auslöser Fallschirm
            fallschirm = Fallschirm(self.rect.centerx, self.rect.top)
            alle_sprites.add(fallschirm)
            fallschirme.add(fallschirm)
            sound=pygame.mixer.Sound("Audio/help.mp3")
            sound.play()  
    
     hits = pygame.sprite.spritecollide(fallschirme,bullets,False)
        for hit in hits:
fallschirme = pygame.sprite.Group()