How to make sure the last message sent in WhatsApp python bot

I use the code I wrote to send a message on WhatsApp to several contacts, but before all the messages are sent, Chrome is closed and some messages are not sent. How can I be sure that the message I sent was sent? (This is not a problem in the program) The problem is the low speed of the Internet and you have to wait a while for the message to be sent

from bs4 import BeautifulSoup
from selenium.webdriver.support import expected_conditions as EC
from time import sleep
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait

import os

class WhatsApp:
    def __init__(self) -> None:
        user = os.getlogin()

    options = webdriver.ChromeOptions()
    # options.headless = True
    options.add_argument('--profile-directory=Default')
    options.add_argument(
        f'--user-data-dir=C:\\Users\\{user}\\AppData\\Local\\Google\\Chrome\\User Data')
    PATH = "chromedriver_win32\chromedriver.exe"
    self.driver = webdriver.Chrome(
        executable_path=PATH, chrome_options=options)
    self.driver.set_window_position(0, 0)
    self.driver.set_window_size(0, 0)
    self.driver.get("https://web.whatsapp.com")
    WebDriverWait(self.driver, 5000).until(
        EC.presence_of_element_located(
            (By.XPATH, '//*[@id="side"]/header/div[2]/div/span/div[2]/div'))
    )
def send_msg(self, phone: str, msg: str):

    search_btn = self.driver.find_element_by_xpath(
        '//*[@id="side"]/header/div[2]/div/span/div[2]/div')
    search_btn.send_keys(Keys.ENTER)
    input_search = self.driver.find_element_by_xpath(
        '/html/body/div[1]/div/div/div[2]/div[1]/span/div/span/div/div[1]/div/label/div/div[2]')
    input_search.send_keys(phone, Keys.ENTER)
    try:
        sleep(1)
        self.driver.find_element_by_xpath(
            "/html/body/div[1]/div/div/div[4]/div/footer/div[1]/div/span[2]/div/div[2]/div[1]/div/div[2]").send_keys(
            msg, Keys.ENTER)
    except Exception as e:
        pass
        # showMessageBox.contacte_not_found(showMessageBox)

def check_is_sended(self, phone: str, msg: str):
    pass
#some code i need to check message sended or not

def END(self):
    sleep(3)
    self.driver.close()

app = WhatsApp()
phone = "+98xxxxxxxx87"
message = "test"
app.send_msg(phone , message)

app.END()

so I do not want to use sleep for long time im just want to find best way to make time short for runing program any id?