Where to put Grav Breadcrumbs code?

I installed the grav breadcrumb plugin.

I realized it didn’t work out the box as the README says. You need to include it. I want it on every page, not just blog pages. (default.md) I am trying to figure out where to add

{% if config.plugins.breadcrumbs.enabled %}
    {% include 'partials/breadcrumbs.html.twig' %}
{% endif %}

I tried my partials/base.html.twig according to this post above but it’s still not working. Does anyone know where this is supposed to go?
Using the base quark theme.

I solved it partially. The following forces it on every page which is okay. But I lose the ability to control the pages. Adding show_breadcrumbs to the if statement actually breaks it and the breadcrumbs stop showing.
After installing, copy this to the default.html.twig file

{% extends 'partials/base.html.twig' %}

{% block content %}
    {% if config.plugins.breadcrumbs.enabled %}
        {% include 'partials/breadcrumbs.html.twig' %}
    {% endif %}
    {{ page.content|raw }}
{% endblock %}