Trouble with IF statements in Javascript

So to explain, I’ve created code that asks the user for their MBTI code (results from 16personalities.com).
If the user types INTJ, for instance, a list of celebrities who share that same result will appear. I was a bit confused on how to write the code. It’s a small amount so far, but I feel like it should work.

Here is my javascript, which connects to an HTML file.

const INTJ = ["Friedrich Neitzsche", "Michelle Obama", "Elon Musk", "Christopher Nolan", "Vladimir Putin", "Arnold Schwarzenegger", "Colin Powell", "Samantha Power"]


let button = document.querySelector("findlist");
let input = document.querySelector("mtbicode");

if (input == "INTJ"){
    button.addEventListener("click", INTJfunc);
    console.log("yay");
}

function INTJfunc(){
    var x = document.querySelector("matchups").innerHTML;
    return(x = INTJ) 
}

Basically by code make variables for the button that gets pressed, and the user input. If the user’s input is “INTJ”, The button (when clicked) will trigger the INTJ func. I also added a console log to test it, but that doesn’t seem to appear in the html console.

The INTJfunc function grabs the space where the results get displayed, and should display the results.

For some reason none of this works! Nothing appears in the console, and no errors show up either.