PLEASE HELP ME

Projects General Guidance
4 
int pinButton = 5;
int pinButton = 6;
int pinButton = 8;

3 variables with the same name?

Then this

int LED2 = 2;
int LED4 = 4;
int LED7 = 7;

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);

and

int stateButton5;
int stateButton6;
int stateButton8;

  stateButton = digitalRead(pinButton5);  
  stateButton = digitalRead(pinButton6); 
  stateButton = digitalRead(pinButton8);

and

  previous == stateButton5;
  previous == stateButton6;
  previous == stateButton8;