i don't understand what i did wrong

i was trying to create a python game where you have to write a word in the console in a certain amount of time or else you lose but idk why sometimes the timer works other don’t,i have tried 2 time and i still don’t understand what i did wrong these are the 2 code i tried: this is the first import time import threading

a=False
x=0
def count():
    time.sleep(5)
    if a == False:
        print ("you lose")
    else:
        print("you win")

def world():
    while x != "hello im mark":
        print("write hello im mark")
        x=input()
    else:
        a == True
h = threading.Thread(target=count)
z = threading.Thread(target=world)
z.start()
h.start()

this is the second:

import time
import threading
z="hello im mark"
y="1"
a=True
def win():
    print("you win")
def count():
    time.sleep(5)
    if a== True:
        print("you lose")
    else:
        print("you win")


def count_2(y):
    while y != z:
        print("write "+z)
        y=input()
        a=True
    else:
        a == 1


f= threading.Thread(target=count_2,args=y)
g= threading.Thread(target=count)
g.start()

f.start()