Only showing 10 posts using multiple shortcode combiatino

I’m only showing 10 posts when I use the following suggested shortcode from this article (https://displayposts.com/2019/01/04/post-grid-styling/):

[display-posts image_size=”thumbnail”?wrapper=”div” wrapper_class=”display-posts-listing grid” meta_key=”_thumbnail_id”]

I also included the required CSS

/* Grid style */
.display-posts-listing.grid {
display: grid;
grid-gap: 16px;
}

.display-posts-listing.grid .title {
display: block;
}

.display-posts-listing.grid img {
display: block;
max-width: 100%;
height: auto;
}

@media (min-width: 600px) {
.display-posts-listing.grid {
grid-template-columns: repeat( 2, 1fr );
}
}

@media (min-width: 1024px) {
.display-posts-listing.grid {
grid-template-columns: repeat( 3, 1fr );
}
}

All it shows is the title and the last 10 posts I’ve made.

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