How to create function "Again"?

Question

I created own game, however, I don't still know and understand how to create function 'Again' when I click on button. How to create it? My part code:

import pygame

def beginning():
    Beginning = True
    while Beginning and not QuitState.quit:
        clock.tick(FPS)
        for event in pygame.event.get():
            #[...]
            if event.type == pygame.QUIT:
                QuitState.set_quit() 
    
        mini_button = Button(230, 80)
        screen.blit(important_phone_jpg, important_phone_rect)
        print_text_5('Выживание с Соником', 320, 50)
        mini_button.draw(535, 170, 'Играть', game1)
        mini_button1 = Button(440, 80)
        pygame.display.update()

def game1():
    global health 
    Game = True
    while Game and not QuitState.quit:
        clock.tick(FPS)
        for event in pygame.event.get(): 
            #[...]
            if event.type == pygame.QUIT:
                QuitState.set_quit()  
            
        if player.score >= 900:
            victory1()

        if health <= 0:
            game_over1()
            
        show_health()
        button = Button(195,80)
        button.draw(20, 80, 'Пауза', pause1)
        print_text('Очки  ' + str(player.score), 725, 25)
        print_text(':', 840, 25)
        pygame.display.update()
        all_sprites.update()
        screen.blit(morning_png, morning_rect)
        all_sprites.draw(screen)

def pause1():
    Pause = True
    while Pause and not QuitState.quit:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                QuitState.set_quit()  
                
        screen.blit(phone_jpg, phone_rect)
        buttonq = Button(120, 80)
        print_text_2('Хотите продолжить игру?', 400, 270)
        buttonq.draw(300, 340, 'Да!', game1)
        buttonq_1 = Button(140, 80)
        buttonq_1.draw(870, 340, 'Нет!', beginning)
        pygame.display.update()

def game_over1():
    Game_over = True
    while not QuitState.quit:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                QuitState.set_quit() 
                
        screen.blit(game_over_jpg, game_over_rect)
        button_5 = Button(235,80)
        print_text_3('К сожалению, вы проиграли! Попробуйте ещё раз!', 135, 400)
        button_5.draw(400, 500, 'Заново', game1)
        button_5.draw(700, 500, 'Назад', beginning)
        pygame.display.update()
        
def victory1():
    Victory = True
    while Victory and not QuitState.quit:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                QuitState.set_quit()
            
        screen.blit(victory_jpg, victory_rect)
        button_5 = Button(205,90)
        print_text('Ура! Вы победили! Мои поздравления! Хотите сыграть ещё раз?', 280, 360)
        button_5.draw(450, 500, 'Да', game1)
        button_5.draw(650, 500, 'Нет', beginning)
        pygame.display.update()
        
beginning()
pygame.quit()

*I want to player had ability to play again when click on buttons: 'button_5.draw(450, 500, 'Да', game1)' 'button_5.draw(400, 500, 'Заново', game1)' or when player quit from game1 and play again: 'mini_button.draw(535, 170, 'Играть', game1)'