How to make my python server work on an external network using ngrok?

Question

I created a server in python that runs on port 50000... Soon after that I created my client. If the two are on the same network both connect and everything is fine! But in external network I can not make the connection with both. Then I discovered a tool called ngrok, downloaded it and started using it. I am doing it as follows: I run my server on port 50000 after that I run the following command: ngrok.exe http 50000 ngrok works, opens the link and beauty, but when I enter the generated link my server made in python connects with what I think is ngrok, because it returns me this:

Host: 66907fd55f8a.ngrok.io
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate, br
Accept-Language: pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7
Sec-Ch-Ua: "Google Chrome";v="87", " Not;A Brand";v="99", "Chromium";v="87"
Sec-Ch-Ua-Mobile: ?0
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Upgrade-Insecure-Requests: 1
X-Forwarded-For: Meu ip
X-Forwarded-Proto: https


Digite o comando: 

But I want my client to connect to the server so I can send commands to it.

The short code of the server and the client, it is summarized because it is very long, because in both codes I added several functions: py server.:

import socket
from time import sleep

def abrir_servidor():
    bind_ip = ''  # local onde o servidor roda
    # bind_ip = ''
    bind_port = 50000  # porta onde roda o servidor

    print('Iniciando servidor: ')
    sleep(0.5)

    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.bind((bind_ip, bind_port))
    server.listen(1)

    print('Servidor iniciado!')

    print('Aguardando cliente...')
    global conexao
    global endereco
    conexao, endereco = server.accept()
    print(f'Conectado em: {endereco}')
def main():
    abrir_servidor()
    while True:
        global comandos
        comandos = input('Digite o comando: ')
        


while True:
    main()

py client.:

import socket
import os

def conectar():
    #conectando no servidor:
    target_host = 'localhost'
    target_port = 50000
    global cliente
    cliente = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    cliente.connect((target_host, target_port))
    # localizar script:
    for a in range(1):
        cliente.send(os.getcwd().encode())
        
def main():
    conectar()
    while True:
        global comandos
        comandos = cliente.recv(4000).decode()
        
while True:
    main()

How do I do this? I’m already running out of ideas. Is there another way to make my server run on an external network?