Carousel Slider

I needed to adjust this script so that when I clicked on the previous button it would return the command, but when I click on both the next and the previous one, the slide is advancing in the same way, thank you in advance. >

CODE JS:

$(document).ready( function() {
    $('#myCarousel').carousel({
        interval:   4000
    });

    var clickEvent = false;
    $('#myCarousel').on('click', '.nav a', function() {
            clickEvent = true;
            $('.nav li').removeClass('active');
            $(this).parent().addClass('active');        
    }).on('slid.bs.carousel', function(e) {
        if(!clickEvent) {
            var count = $('.nav').children().length -1;
            var current = $('.nav li.active');
            current.removeClass('active').next().addClass('active');
            var id = parseInt(current.data('slide-to'));
            if(count == id) {
                $('.nav li').first().addClass('active');    
            }
        }
        clickEvent = false;

    });
});

Next, I'm going to tell you what's going on, this function coordinates for my slide to pass, and a background comes up in the options on my menu, it's as if the links follow the image

This is my slide:

ButwhenIclickonthecontrollertotheleft,theimagegoestotheleft,butthebackgroundinthelink,continuestogoforward,inthecasethere,itwasinAERIAL,Iclickedback,anditwenttoPHENOMENAL,thatis,itjustgoesforward,doesnotcomeback. This function is the core of my slide, but I need it when I click back it comes back and not forward, how do I do that? I'm kind of a layman with jquery ..