I want to know what's wrong with my coding

Projects Programming
7

And I want you to Auto Format the code in the IDE and post it here in code tags so that it looks like this

unsigned long currentTime = 0;
unsigned long previousTime1 = 0;
unsigned long previousTime2 = 0;

void setup()
{
  pinMode(12, INPUT); // pressure switch low input
  pinMode(2, OUTPUT); // compressor-01 start command
}

void loop()
{
  unsigned long currentTime = millis();
  if (digitalRead(12) == HIGH && currentTime - previousTime1 >= 2000) // when pressure switch is low which detected by arduino as high input & 2 sec delay
  {
    digitalWrite(2, HIGH); // compressor-01 start command
    previousTime1 = currentTime;
    if (digitalRead(12) == HIGH && currentTime - previousTime2 >= 6000) // compressor-01 remain running for from 2 sec to 6 sec
    {
      digitalWrite(2, LOW); // after 6 sec compressor-01 stop command
      previousTime2 = currentTime;
    }
    else
    {
      digitalWrite(2, LOW); // if pressure switch is high which detected by arduino as low input for compressor-01 stop command.
    }
  }
}