Stopwatch with Arduino Mega 2560

// created by harrison blaker on october 25, 2019
#include <LiquidCrystal_I2C.h>
const int buttonPin = 2;
LiquidCrystal_I2C lcd(0x20,16,2);  // set the LCD address to 0x20 for a 16 chars and 2 line display
int timer = 0;
int timer2 = 0;
int timer3;
int buttonState = 0; 
int toggle = 0;
void setup()

{
  lcd.init();                      // initialize the lcd

  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("stop watch");
   pinMode(buttonPin, INPUT);
   
}

void loop()
{


   buttonState = digitalRead(buttonPin);
   if (buttonState == HIGH);
   {
   int toggle = toggle + 1;
}
  int timer;
  int timer2;
  int toggle;
  if (toggle >= 2)
  int toggle = 0;
{
int timer = 0;

}
  
 
	 while (toggle = 0) {
    // turn LED on:
lcd.clear();
buttonState = digitalRead(buttonPin);
int timer = timer + 1;
lcd.setCursor(0,1);
lcd.print(timer);
lcd.setCursor(0,0);
lcd.print("seconds counter");
delay (1000);
	 }