Louie's Arduino Race Game

//https://pastebin.com/HffCmD2V
//https://hackaday.io/project/3477-race-to-the-led-arduino-game#menu-description
//got code from this website and tweaked it with things I wanted and revisions

const int button1 = 8;
const int button2 = 4;
const int reset = 13;

const int lvl1led1 = 11;
const int lvl2led1 = 10;
const int lvl3led1 = 9;

const int lvl1led2 = 5;
const int lvl2led2 = 6;
const int lvl3led2 = 7;

const int counterled1 = 1;
const int counterled2 = 0;


int lastbuttonstate = 0;
int lastbuttonstate2 = 0;

 
 int goal = 60;
 int state1 ; 				//didn't assign a value because will be assigned later
 int state2 ;
int stateReset ;
 
 int counter1 = 0;			//assigning 0 since the score would start at 0
 int counter2 = 0; 
 
 
 void setup() {
 
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(lvl1led1, OUTPUT);
  pinMode(lvl1led2, OUTPUT);
  pinMode(lvl2led1, OUTPUT);
  pinMode(lvl2led2, OUTPUT);
  pinMode(lvl3led1, OUTPUT);
  pinMode(lvl3led2, OUTPUT);
  pinMode(counterled1,OUTPUT);
  pinMode(counterled2, OUTPUT);			//declaring all outputs and inputs
  pinMode(reset, INPUT);
   
 }
 
 void loop() {
 
   state1 = digitalRead(button1);  //set digitalread to state1 to check if button1 is pressed
   state2 = digitalRead(button2);  //set digitalread to state2 to check if button2 is pressed
   stateReset = digitalRead(reset); //set digitalread to stateReset to check if reset is pressed
   
// used nested if statements to prevent holding down button and getting clicks

   if(state1 != lastbuttonstate) { //check if state1 is not equal to lastbuttonstate
     
     if (state1 == HIGH) { //check if state1 is high
       
       counter1 = counter1 + 1; // add 1 point to counter1
       digitalWrite(counterled1, HIGH);
       
     } else {  //if state1 isn’t high run this code
       digitalWrite(counterled1, LOW);
     } 
     
   }
   lastbuttonstate = state1; 
//this code prevents player 1 users from holding the button to get points
   
   if(state2 != lastbuttonstate2) { //check if state2 is not equal to lastbuttonstate2
     
     if(state2 == HIGH) { //check if state2 is high
       
       counter2 = counter2 + 1; //add 1 point to counter2
       digitalWrite(counterled2, HIGH);
     } else{ // if state 2 is low run this code
       
       digitalWrite(counterled2, LOW);
     }
   }
   lastbuttonstate2 = state2; 
// this code prevents player 2 users from holding the button to get points
   

//______________________________________   
   
  if(counter1 >= 20) { //if counter1 reaches a score of 10 or more turn on first light
     
     digitalWrite(lvl1led1, HIGH);   
   }
   
   if(counter2 >= 20) { //if counter2 reaches a score of 10 or more turn on first light
     
     digitalWrite(lvl1led2, HIGH); 

   }
//_______________________________________
   
  if(counter1 >= 40) { //if counter1 reaches a score of 40 or more turn on second light
     
     digitalWrite(lvl2led1, HIGH);   
   }
   
   if(counter2 >= 40) { //if counter2 reaches a score of 40 or more turn on second light
     
     digitalWrite(lvl2led2, HIGH);   
   } 
//________________________________________  
   
   
   if (counter1 >= goal) {
// if counter1 reaches 60 or more reset the opponent's lights and counter to indicate the win
     
     digitalWrite(lvl3led1, HIGH);
     
     counter2 = 0;
     digitalWrite(lvl1led2,LOW);
     digitalWrite(lvl2led2,LOW);
     digitalWrite(lvl3led2,LOW);
   } 
   
   



if (counter2 >= goal) { 
// if counter1 reaches 60 or more reset the opponent's lights and counter to indicate the win

     digitalWrite(lvl3led2, HIGH);
     counter1 = 0;
     digitalWrite(lvl1led1,LOW);
     digitalWrite(lvl2led1,LOW);
     digitalWrite(lvl3led1,LOW);
   }  

   if (stateReset == HIGH) { 
//if stateReset is equal to high reset all counters and turn off all lights
    counter1 = 0;
    counter2 = 0;
     
     digitalWrite(lvl1led1,LOW);
     digitalWrite(lvl2led1,LOW);
     digitalWrite(lvl3led1,LOW);
     digitalWrite(lvl1led2,LOW);
     digitalWrite(lvl2led2,LOW);
     digitalWrite(lvl3led2,LOW);
   } // made own reset button so void setup wouldn’t have to run again.
// resets the game instantly
   
 }