Letter_game not working, what did I do wrong?

import os
import random
import sys

words = [
    "abc",
    "def",
    "hij",
    "klm",
    "nop"
]

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("\n\n")

    for letter in bad_guesses:
        print(letter, end=" ")
    print("\n\n")

    for letter in secret_word:
        if letter in good_guesses:
            print(letter, end="")
        else:
            print("_", end="")
    print("")


def get_guess(bad_guesses, good_guesses):
    while True:
        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've already guessed that letter!")
        elif not guess.isalpha():
            print("You can only guess alphabetical letters!")
        else:
            return guess


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

    while True:
        draw(bad_guesses, good_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!")
                print("The secret word was {}".format(secret_word))
                done = True
        else:
            bad_guesses.append(guess)
            if len(bad_guesses) == 7:
                draw(bad_guesses, good_guesses, secret_word)
                print("You lost!")
                print("The secret word was{}".format(secret_word)
                done = True

        if done:
            play_again = input("Play again? Y/N: ").lower()
            if play_again != "n":
                return play(done=False)
            else:
                sys.exit()


def welcome():
    start = input("Press ENTER to start, or Q to quit.").lower()
    if start == "q":
        print("Bye!")
        sys.exit()
    else:
        return True

print("Welcome to Letter Guess!")

done = False

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