Cacher is the code snippet organizer for pro developers

// ---------------------------------
//  Method 1: More SEO Friendly
// ---------------------------------

add_filter('redirect_canonical', 'bs_no_redirect_404');
function bs_no_redirect_404($redirect_url)
{
    if (is_404()) {
        return false;
    }
    return $redirect_url;
}

/* 
* A more SEO friendly way to stop WordPress from guessing URLs.
* i.e, without completely disabling the redirect_canonical filter
*/
 

// ---------------------------------
//  Method 2: 
// ---------------------------------

remove_filter('template_redirect', 'redirect_canonical');

/* 
* Completely disables the canonical redirection
*/

// Source: https://www.bloggersignal.com/stop-wordpress-from-guessing-urls/