Unable to Create Bootstrap Grid - html

Question

I am stuck at a point where i dont know where to go....I am trying to create a grid system for my website but not getting the desired output.
Here is the output structure which i want to create using Bootstrap 4:
My Code :
<section class="homepage-banner-section">
<div class="container">
<div class="row">
<div class="col-sm-4 col-md-4">
<img src="img/home-banner-one.png" class="img-fluid" alt="Responsive image">
</div>
<div class="col-sm-8 col-md-8">
<div class="row">
<div class="col-sm-4">
Some text here
</div>
<div class="col-sm-8">
<img src="img/home-banner-two.png" class="img-fluid" alt="Responsive image">
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-12">
Some Text Here
</div>
</div>
</div>
</section>
I will appreciate it if someone guide me the right direction.Have lack of knowledge about bootstrap grid system and column classes.

Answer 1

If you change both col-sm-4 to col-12 you will get two full width columns inside your row.
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/>
<section class="homepage-banner-section">
<div class="container">
<div class="row">
<div class="col-sm-4 col-md-4">
<img src="img/home-banner-one.png" class="img-fluid" alt="Responsive image">
</div>
<div class="col-sm-8 col-md-8">
<div class="row">
<div class="col-12">
Some text here
</div>
<div class="col-12">
<img src="img/home-banner-two.png" class="img-fluid" alt="Responsive image">
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-12">
Some Text Here
</div>
</div>
</div>
</section>

Answer 2

You can divide your section / container into two columns (left/right) and then the right column into rows (text/image)
Something like below (see demo)
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.0/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.0/js/bootstrap.min.js"></script>
<section class="homepage-banner-section">
<div class="container">
<div class="row">
<!-- left column -->
<div class="col-xs-4">
<img src="https://placekitten.com/200/300" class="img-fluid" alt="Responsive image">
</div>
<!-- right column -->
<div class="col-xs-8">
<!-- first row -->
<div class="row">
<div class="col">
some text only on right column
</div>
</div>
<!-- second row -->
<div class="row">
<div class="col">
<img src="https://placekitten.com/300/100" class="img-fluid" alt="Resp. img">
</div>
</div>
</div>
</div>
<!-- footer -->
<div class="row">
<div class="col-xs-12">
footer text that goes the width of the container
</div>
</div>
</div>
</section>