If you want the headers down the left side of your table, simply write the markup differently
See this demo
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
<table class="table">
<tbody>
<tr>
<th>Row</th>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<th>First Name</th>
<td>John</td>
<td>Peter</td>
<td>John</td>
</tr>
<tr>
<th>Last Name</th>
<td>Carter</td>
<td>Parker</td>
<td>Rambo</td>
</tr>
<tr>
<th>Email</th>
<td>johncarter@mail.com</td>
<td>peterparker@mail.com</td>
<td>johnrambo@mail.com</td>
</tr>
</tbody>
</table>