Can someone please check to see why my letter game (refined version) isn't working correctly. Appreciated. Thanks :)

import random

import os

import sys

# make a list of words
words = [
    'squat',
    'snatch',
    'clean',
    'jerk',
    'handstand',
    'rowing',
    'running',
    'barbell',
    'bumpers'
]

def clear():
    if os.name == 'nt':
        os.system('cls')
    else:
        os.system('clear')

def draw(bad_guesses, good_guesses, secret_word):
    clear()


    print("Strikes: {}/7".format(len(bad_guesses)))
    print('')  

    for guess in bad_guesses:
        print(guess, end=' ')
    print('\n\n')

    for guess in secret_word:
        if guess in good_guesses:
            print(guess, end=' ')
        else:
            print('_', end=' ')

    print('')

def get_guess(bad_guesses, good_guesses):
    while True:    
        # take guesses
        guess = input("Guess a letter: ").lower()

        if len(guess) != 1:
            print("You can only guess a single letter")
        elif guess in bad_guesses or guess in good_guesses:
            print("You already guessed that letter")
        elif not guess.isalpha():
            print("You can only print letters")
        else:
            return guess

def game(done): 
    clear()
    secret_word = random.choice(words)
    bad_guesses = []
    good_guesses = []  

    while True:
        draw(good_guesses, bad_guesses, secret_word)
        guess = get_guess(bad_guesses, good_guesses)

        if guess in secret_word:
            good_guesses.append(guess)
            found = True
            for letter in secret_word:
                if letter not in good_guesses:
                    found = False
            if found:
                print("You win!! The word was {}".format(secret_word))
                done = True
        else:
            bad_guesses.append(guess)
            if len(bad_guesses) == 7:
                draw(good_guesses, bad_guesses, secret_word)
                print("You lost!!")
                print("Your secret word was {}".format(secret_word))
                done = True

        if done:
            play_again = input("Play again? Y/n ").lower()
            if pay_again.lower() != 'n':
                return game(done=False)
            else:
                sys.exist()

def welcome():
    print ('Welcome to the letter guessing game')
    start = input("Press enter/return to start, or Q to quit" )
    if start.lower() == 'q':
        print("bye")
        sys.exit()
    else:
        return True



done = False

while True:
    clear()
    welcome()
    game(done)