Debouncing Button Input with Timers in Arduino

const int buttonPin = 8;

unsigned long debounceDelay = 50;  // debounce delay
unsigned long startTime = 0;       // variable to store time

bool lastButtonState = HIGH;     // variable to store the previous button state
bool currentButtonState = HIGH;  // variable to store the current button state

// assign two timer to keep track of the time make keep them both in OFF state
bool timer1 = false;
bool timer2 = false;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);  //assign button pin to PULL UP resistor
  Serial.begin(9600);
}

void loop() {
  float buttonState = digitalRead(buttonPin);  //read the button state

  if (buttonState != lastButtonState) {  // compare with last button state if it has changed
    startTime = millis();                // store the time when the button state has been changed
    timer1 = true;                       // turn ON timer 1
  }

  if (timer1 == true) {                          // if timer 1 is ON
    if (millis() - startTime > debounceDelay) {  // check if the debounce time has been passed
      timer2 = true;                             // turn ON timer 2 after the debounce time
    }
  }

  if (timer2 == true && buttonState != currentButtonState) {  // check if time 2 is ON and button state is LOW
    currentButtonState = buttonState;                         // update current button state
    if (currentButtonState == LOW) {                                 // check if the button state is still LOW
      Serial.println("BUTTON PRESSED");                       // take action accordingly
    } else {
      Serial.println("BUTTON NOT PRESSED");  // take action accordingly
    }
  }
  lastButtonState = buttonState;  // update the last button state
}