Monty Hall Problem, resetGame is behaving weirdly - function

Question

Basically the code (you guys probably can write it much cleaner than I) works perfectly on the first run through.
var doorSelection = ["a", "b", "c"];
var started = false;
var notPicked = true;
var notFinalChosen = true;
var wins = 0;
var losses = 0;
let roundComplete = false;
document.querySelector(".scoreCorrect").textContent = wins;
document.querySelector(".scoreWrong").textContent = losses;
document.querySelector(".heresText").classList.add("invisible");
document.querySelector(".startButton").addEventListener("click", function(){
document.querySelector(".startButton").classList.add("invisible");
mhGame();
started = true;
})
function mhGame(){
document.querySelector(".heresText").classList.remove("invisible");
var doorNumber = Math.floor(Math.random() * 3);
var doorPicker = doorSelection[doorNumber];
console.log(doorNumber + " " + doorPicker);
var doorContainer = document.querySelectorAll(".doorcontainer")[doorNumber];
var car = document.querySelector(".car");
car.classList.remove("invisible");
var doorContainerRect = doorContainer.getBoundingClientRect();
var carRect = car.getBoundingClientRect();
var carPosLeft = doorContainerRect.left - carRect.left + 50;
var carPosTop = doorContainerRect.top - carRect.top + 240;
car.style.left = carPosLeft + "px";
car.style.top = carPosTop + "px";
for(var i=0; i<3; i++){
document.querySelectorAll(".doorcontainer")[i].addEventListener("click", function(){
if (started && notPicked){
var firstPicked = this.textContent.trim();
console.log(firstPicked);
darkenDoor(firstPicked);
notPicked = false;
setTimeout(function(){
var doorsLeft = doorSelection.filter(function(door) {
return door !== firstPicked && door !== doorPicker;
});
var doorToReveal = doorsLeft[Math.floor(Math.random() * doorsLeft.length)];
console.log(doorToReveal);
hostReveal(doorToReveal);
document.querySelector(".heresText").classList.add("invisible");
document.querySelector(".switch").classList.remove("invisible");
document.querySelector(".stay").classList.remove("invisible");
for(var j=0; j<2; j++){
document.querySelectorAll(".buttonChoice div")[j].addEventListener("click", function(){
if(notFinalChosen){
var finalChoice = this.textContent;
if (finalChoice === "Switch"){
removeDarken(firstPicked);
var finalDoor = doorSelection.filter(function(newdoor){
return newdoor !== firstPicked && newdoor !== doorToReveal;
})
var openFinalChoice = "." + finalDoor + " .door";
document.querySelector(openFinalChoice).classList.add("invisible");
notFinalChosen = false;
console.log(finalDoor + ", " + doorPicker);
if(finalDoor == doorPicker){
document.querySelector(".heading").textContent = "You Win!";
wins++;
}
else{
document.querySelector(".heading").textContent = "Fail!";
losses++;
}
document.querySelector(".scoreCorrect").textContent = wins;
document.querySelector(".scoreWrong").textContent = losses;
}
else {
var openFinalChoice = "." + firstPicked + " .door";
removeDarken(firstPicked);
document.querySelector(openFinalChoice).classList.add("invisible");
notFinalChosen = false;
if(firstPicked === doorPicker){
document.querySelector(".heading").textContent = "You Win!";
wins++;
}
else{
document.querySelector(".heading").textContent = "Fail!";
losses++;
}
document.querySelector(".scoreCorrect").textContent = wins;
document.querySelector(".scoreWrong").textContent = losses;
}
}
resetGame();
})
}
}, 2000)
}
})
}
}
function darkenDoor(varsTemp){
var doorVars = document.querySelector("." + varsTemp);
doorVars.classList.add("darken");
}
function removeDarken(varsTemp2){
var doorVars2 = document.querySelector("." + varsTemp2);
doorVars2.classList.remove("darken");
}
function hostReveal(revealed){
var revealedDoor ="." + revealed + " .door";
document.querySelector(revealedDoor).classList.add("invisible");
}
function resetGame(){
setTimeout(function(){
console.log(doorSelection);
roundComplete = false;
started = false;
notPicked = true;
notFinalChosen = true;
document.querySelector(".switch").classList.add("invisible");
document.querySelector(".stay").classList.add("invisible");
document.querySelector(".car").classList.add("invisible");
document.querySelector(".car").style.left = 0 + "px";
document.querySelector(".car").style.top = 0 + "px";
document.querySelector(".startButton").classList.remove("invisible");
doorPicker = null;
doorNumber = null;
doorToReveal = null;
finalChoice = null;
finalDoor = null;
doorsLeft = null;
openFinalChoice = null;
for(var m=0; m<doorSelection.length; m++){
document.querySelectorAll(".door")[m].classList.remove("invisible");
}
document.querySelector(".heading").textContent = "Welcome to the Monty Hall Game!";
}, 3000)
}
But once I call resetGame(); and I've tried many different things including a true/false statement to trigger it, and placing it in different places (I have no idea what I'm doing with this part now), it opens the door with the car in it on the second round, then doesn't remove the "darken" by the third round, and by maybe the 4th or 5th round, the "start" button stops working as a whole.