Hi,

By default, there's no option to disable post titles for a particular post, but you can disable by adding some CSS to Appearance > Customize > Custom CSS:

article#post-279 .entry-title {
    display: none;
}

In case you want to hide on a single post only:

body.single article#post-279 .entry-title {
    display: none;
}

In case you want to hide the post title on a single post and apply to all posts:

body.single article .entry-title {
    display: none;
}

Change 279 to the post ID you want to hide. If you can't find your post ID, please read this article for instruction: https://www.wpbeginner.com/beginners-guide/how-to-find-post-category-tag-comments-or-user-id-in-wordpress/

Regards,
PenciDesign.