I'm trying to update the counter and use it so I can switch the question each time but it only works if i remove the counter +=1, help please!

Code below:

const questions= [
    "What is Orochimaru's last name?",
    "What is Sasuke's least favorite food?",
    "What was Itachi's girlfriend's name?"
]

const correctAnswers= ["None", "sweets", "Izumi"]

const counter= 0 //for keeping track of answer alignment
//const score= 0 //keeps track how many they get right 


submitButton.onclick= function(){

    if (answer_a.checked == true && labelA.textContent == correctAnswers[counter]) {
        counter +=1 //will work if I delete counter+=1 and replace counter as 1
        questionContainer.innerHTML = questions[counter] 
    }