Unfollow all on Instagram

unfollow.js

setInterval(Unfollow, 1000);
function Unfollow() {
    var followingBox = document.querySelectorAll("a[href='/brixtol/following/']");
    followingBox[0].click();
    setTimeout(function(){
        var following = document.querySelectorAll("._aj7mu._r4e4p._95tat._o0442");
        for (var i = 0; i < following.length; i++){
            following[i].click();
        }
        var close = document.querySelectorAll("._3eajp");
        close[0].click();
    },5000);
}

hi
how shoul i use this ?