This is a full example of how your _entry template with comment support may look like.
It shows a comment form for an entry, and the latest 50 comments.
After a comment was posted, a message is shown instead of the form.
You can use parts of the code in an include or embed for reusability and customizability.
{% extends '_layout.twig' %}
{% block main %}
<h1>{{ entry.title }}</h1>
<p>entry contents...</p>
{# start comments #}
{# you may want to put this code in an include or embed for reusability #}
<div id="comments"><!-- anchor --></div>
{# @var commentsWork \twentyfourhoursmedia\commentswork\services\CommentsWorkService #}
{% set commentsWork = craft.commentsWork.service %}
{# check if the user has just posted a comment and provide feedback #}
{% set justPosted = commentsWork.checkJustPosted() %}
{% if justPosted %}
{# show a message not the form #}
{% if justPosted.error %}
<div class="alert alert-danger">
<p>The comment could not be posted.</p>
</div>
{% else %}
{% if justPosted.status == 'APPROVED' %}
<div class="alert alert-success"><p>Your comment has been published.</p></div>
{% elseif justPosted.status == 'PENDING' %}
<div class="alert alert-warning"><p>Your comment has been posted and is awaiting moderation.</p></div>
{% else %}
{# the status is either trashed or spam for some reason,, #}
<div class="alert alert-danger"><p>Your comment has been posted but has not been not published..</p>
</div>
{% endif %}
{% endif %}
{% else %}
{# show the form #}
{% if not currentUser and not commentsWork.allowAnonymous(entry) %}
<p>Anonymous commenting is not allowed. Please login.</p>
{% else %}
<div class="card bg-light">
<div class="card-header">
Leave a comment
</div>
<div class="card-body">
<form method="post" action="{{ url('/actions/comments-work/default/post-comment') }}">
{{ csrfInput() }}
{{ signCommentForm(entry) }}
<input name="redirect" value="{{ craft.app.request.url }}#comments" type="hidden"/>
<input name="elementId" value="{{ entry.id }}" type="hidden"/>
<input name="siteId" value="{{ entry.siteId }}" type="hidden"/>
<input name="commentFormat" value="text" type="hidden"/>
<div class="form-group">
<label for="comment-title">Title</label>
<input name="title" id="comment-title" type="text" class="form-control"/>
</div>
<div class="form-group">
<label for="comment-content">Comment</label>
<textarea name="comment" rows="5" id="comment-content" class="form-control"></textarea>
</div>
<div>
<input type="submit" class="btn btn-primary" value="Post comment"/>
</div>
</form>
</div>
</div>
{% endif %}
{% endif %}
{# show latest 50 comments#}
<p>{{ commentsWork.countComments(entry) }} total comments</p>
{% set comments = commentsWork.fetchComments(entry, 0, 50) %}
{% for comment in comments %}
{# @var comment \twentyfourhoursmedia\commentswork\models\CommentModel #}
<div class="card card bg-light">
<div class="card-body">
<div class="row">
<div class="col-md-2">
<img src="https://image.ibb.co/jw55Ex/def_face.jpg" class="img img-rounded img-fluid"
width="64">
<p class="text-secondary text-center">{{ comment.dateCreated | date }} {{ comment.dateCreated | date('H:i') }}</p>
</div>
<div class="col-md-10">
{%- if comment.user %}<p><a
href="https://maniruzzaman-akash.blogspot.com/p/contact.html"><strong>{{ comment.user.friendlyName }}</strong></a>
</p>{% endif -%}
{%- if comment.title is not empty %}
<p><strong>{{ comment.title }}</strong></p>
{% endif -%}
{%- if comment.comment is not empty %}
<p>
{{ comment | commentAsHtml }}
</p>
{% endif -%}
</div>
</div>
</div>
</div>
<br/>
{% endfor %}
{# end comments #}
{% endblock %}