What is wrong with my Letter Game? (letter_game.py)

import os
import sys
import random

# Make a list of words
words = ["apple", "banana", "orange", "coconut", "strawberry", "lime", "grapefruit", "lemon", "kumquat", "blueberry", "melon"]

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 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 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))
    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/return to start or Q to quit ").lower()
  if start == "q":
    print("Bye!")
  else:
    return True

print("Welcome to Letter Guess!")

done = False

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