Just do not trade carousel images!
<div id="carouselSite" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#carouselSite" data-slide-to="0" class="active"></li>
<li data-target="#carouselSite" data-slide-to="1"></li>
<li data-target="#carouselSite" data-slide-to="2"></li>
</ol>
<div class="carousel-inner">
<div class="carousel-item active">
<img src="img/lanchonete/slide1.jpg" class="img-fluid d-block">
</div>
<div class="carousel-item">
<img src="img/lanchonete/slide2.jpg" class="img-fluid d-block">
</div>
<div class="carousel-item">
<img src="img/lanchonete/slide3.jpg" class="img-fluid d-block">
</div>
</div>
<a class="carousel-control-prev" href="#carouselSite" role="button" data-slide="prev">
<span class="carousel-control-prev-icon"></span>
<span class="sr-only">Anterior
</span>
</a>
<a class="carousel-control-next" href="#carouselSite" role="button" data-slide="next">
<span class="carousel-control-next-icon"></span>
<span class="sr-only">Proximo
</span>
</a>
</div>