Problem programming 2 LED and 2 buttons

Projects Programming
7 
const int led[]={8,9};
const int button[]={5,2};
int ledState=LOW;
int buttonpushcounter=0;
int buttonstate=0;
int lastbuttonstate=0;
long previousMillis=0;
long interval=1000;
void setup(){
  for(int i=0;i<2;i++){
    pinMode(led[i],OUTPUT);
    pinMode(button[i],INPUT);
    Serial.begin(9600);
  }
}
void loop(){
  //ciclo Blink-ledState
  for(int i=0;i<2;i++){ 

   unsigned long currentMillis = millis();
 
   if(currentMillis - previousMillis > interval) {
    // salva l'ultima volta che il led si è acceso 
     previousMillis = currentMillis;   

    // se il led è acceso e vice-versa:
     if (ledState == LOW)
       ledState = HIGH;
     else
       ledState = LOW;
  buttonstate=digitalRead(button[i]);
   //se il bottone viene premuto aumenta il counter
   if(buttonstate !=lastbuttonstate){
     if (buttonstate=HIGH){
       buttonpushcounter++;
     }
     else{
     }
   }
   lastbuttonstate=buttonstate;
     
     if(buttonpushcounter %1==0){
       
       digitalWrite(led[i],ledState);
       }
      else{
      digitalWrite(led[i],LOW);
   }
  }
 }
}

So basically i tryed to put togheter the blinking code and counter also.. I dont have time to check if it's working or not. I tryed to listen to all of you suggestion.. the only problem is with the debounce code. i don't know where to set it. Thanks again for help guys !