Creating global webserver without port forwarding

Question

I'm setting up a "Smart House" project with Arduino+Esp01F(Serial Communication). But I want to make it global server. For it I use WiFiEsp library. But for it I must Get any port (neither 80 nor 443), then make port forwarding on router. But there are no port forwarding in my router. I think how can I do it? Code:

#include "WiFiEsp.h"

// Emulate Serial1 on pins 6/7 if not present
#ifndef HAVE_HWSERIAL1
#include "SoftwareSerial.h"
SoftwareSerial Serial1(6, 7); // RX, TX
#endif
 String response = "";
char ssid[] = "Nazim";            // your network SSID (name)
char pass[] = "eminmamedov1";         // your network password
int status = WL_IDLE_STATUS;     // the Wifi radio's status
int reqCount = 0;                // number of requests received

WiFiEspServer server(5000);

 WiFiEspClient client;


void setup() {
Serial.begin(115200);
  // initialize serial for ESP module
  Serial1.begin(9600);
  // initialize ESP module
  WiFi.init(&Serial1);

  // check for the presence of the shield
  if (WiFi.status() == WL_NO_SHIELD) {
    Serial.println("WiFi shield not present");
    // don't continue
    while (true);
  }

  // attempt to connect to WiFi network
  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network
    status = WiFi.begin(ssid, pass);
  }

  Serial.println("You're connected to the network");
Serial.println(WiFi.localIP());

WiFi.config(IPAddress(192,168,0,165));
  // start the web server on port 80
  server.begin();

}

void loop() {
   WiFiEspClient client = server.available();
   if(client){
    String res = "";
     Serial.println("New client");
      while (client.connected()) {
      if (client.available()) {
        char c = client.read();

        res+=c;

        if (c == '\n') {
          Serial.println("Sending response");
           client.print(
            "HTTP/1.1 200 OK\r\n"
            "Content-Type: text/html\r\n"
            "Connection: close\r\n"  // the connection will be closed after completion of the response
               "\r\n");
               if(res.indexOf("on?") >=0){
               int s = res.indexOf("on?")+7;
               int f = s+2;
               String ss = res.substring(s,f);
                  int i = ss.toInt();
                 if(i != 6 && i != 7&& (i>=2)&&(i<=13)){

                  pinMode(i,OUTPUT);
                  digitalWrite(i,HIGH);
                  bool s = digitalRead(i);
                  String state = s ? "OFF\r\n" : "ON\r\n";
                  client.println(state);
                 }else{
                  client.println("ERROR\r\n");
                 }
               }else if(res.indexOf("off?") >=0){
                 int s = res.indexOf("off?")+8;
               int f = s+2;
               String ss = res.substring(s,f);
                  int i = ss.toInt();
                 if(i != 6 && i != 7&& (i>=2)&&(i<=13)){

                  pinMode(i,OUTPUT);
                  digitalWrite(i,LOW);
                  bool s = digitalRead(i);
                  String state = s ? "OFF\r\n" : "ON\r\n";
                  client.println(state);
                 }else{
                  client.println("ERROR\r\n");
                 }
               }else if(res.indexOf("state?") >=0){
                 int s = res.indexOf("state?")+9;
               int f = s+2;
               String ss = res.substring(s,f);
                  int i = ss.toInt();
                 if(i != 6 && i != 7&& (i>=2)&&(i<=13)){

                  bool s = digitalRead(i);
                  String state = s ? "OFF\r\n" : "ON\r\n";
                  client.println(state);
               }
               }





                   client.stop();

      }
      }


   }






}