In fact I just noticed that for my use of the component the gallery module and the competition menu link both do part of what I want.
In the module that displays the gallery, you can remove the title from the display and delete the links that are on the image.
In the menu links which displays the competition, there are the share and vote buttons located below the photo.

So I would need a mixture of the two to achieve what I want as a display.

I will only keep the competition menu link and I will not use the module.
But I would need to be able to remove the title at the bottom of the image and remove the link on the image.

And if possible add button for download the picture.

Could you help me with this?

https://postimg.cc/kRcCqpM1

I have hidden the title and removed the possibility of clicking on the photo.

On the other hand, I am stuck on the function to find the image associated with the post.
How can I make the download button link to the correct image to download automatically?

Where are these buttons managed?

I want to put everything at the same level, whether in the image view or below.

But in the same place ;)

https://postimg.cc/jnS81LDR

So I deleted the modification that I had made in /layouts/partials/grid/entry.php to add the button since it is no longer useful.

I commented in <div class="uk-card-body"> to hide the title:

    <!-- 
	<a class="uk-text-large<?php echo $titleClass; ?>" href="https://norrnext.com/<?php echo $href; ?>">
		<?php echo $this->escape(CompetitionHelperExtension::truncate($item->title, $titleLength)); ?>
    </a>
    -->

I deleted in <div class="uk-card-media-top"> to remove the link:

href="https://norrnext.com/<?php echo $href; ?>"

I created a file : download.php in /layouts/default/partials/buttons/

<?php
defined('_JEXEC') or die;

use Joomla\CMS\Router\Route;

// Récupération des données transmises au layout
extract($displayData);

// Construction de l'URL de l'image
$imageUrl = CompetitionHelperExtension::getPhotoUrlPath($item->competition_id, $item->id, CompetitionHelperExtension::getParticipantImage($item), 'l', $cType);
$downloadFileName = basename($imageUrl); // Optionnel, pour spécifier un nom de fichier lors du téléchargement

echo '<a href="https://norrnext.com/' . htmlspecialchars($imageUrl) . '" download="' . htmlspecialchars($downloadFileName) . '" class="nc-share-button uk-button uk-button-default uk-padding-remove uk-width-1-' . $width . '"> <span uk-icon="icon: download"></span> Télécharger </a> </a>';

I changed the actions.php file (To have a different view and display the download button)

<?php
/**
 * @package    Norr_Competition
 * @author     Dmitrijs Rekuns <support@norrnext.com>
 * @copyright  Copyright (C) 2015 - 2024 NorrNext. All rights reserved.
 * @license    GNU General Public License version 3 or later; see license.txt
 */

\defined('_JEXEC') or die;

use Joomla\CMS\Router\Route;
use Joomla\Registry\Registry;

extract($displayData);

/**
 * $displayData
 *
 * @var  string    $cType          Contest type
 * @var  boolean   $isList         Is it a list of entries
 * @var  object    $item           Contest entry
 * @var  Registry  $params         Contest params
 * @var  boolean   $showVote       Display vote button or not
 * @var  boolean   $showShare      Display share button or not
 */
 
 
// Début du conteneur de grille pour les boutons
echo '<div class="uk-grid-small" uk-grid>'; // Utilise 'uk-grid-small' pour un petit espacement entre les boutons

// Bouton de vote (20%)
if ($showVote) :
    echo '<div class="uk-width-1-5">'; // Prend 20% de l'espace
    echo CompetitionHelperTheme::renderLayout('buttons.vote', [
        'item'          => $item,
        'params'        => $params,
        'showShare'     => $showShare,
        'isList'        => $isList
    ]);
    echo '</div>';
endif;



// Bouton de partage (40%)
if ($showShare) :
    echo '<div class="uk-width-2-5">'; // Prend également 40% de l'espace
    $share = $params->get('share');
    if (!empty($share)) :
        echo CompetitionHelperTheme::renderLayout('buttons.share', [
            'img'      => CompetitionHelperExtension::getPhotoUrlPath($item->competition_id, $item->id, CompetitionHelperExtension::getParticipantImage($item), 'l', $cType),
            'url'      => CompetitionHelperExtension::getRootUrl() . Route::_(CompetitionHelperRoute::getEntryRoute($item->id . ':' . $item->alias, $item->competition_id)),
            'title'    => $item->title,
            'share'    => $share,
            'showVote' => $showVote,
            'isList'   => $isList,
            'entryId'  => $item->id
        ]);
    endif;
    echo '</div>';
endif;


// Bouton de téléchargement (40%)
// Affichage direct sans condition
echo '<div class="uk-width-2-5">'; // Prend 40% de l'espace
echo CompetitionHelperTheme::renderLayout('buttons.download', [
    'item'    => $item,
    'cType'   => $cType,
    'params'  => $params,
]);
echo '</div>';

echo '</div>'; // Fin du conteneur de grille

And here is the final result. : https://postimg.cc/N2gdDJrn

Do you see any errors or improvements?

This is a direct link to the photo in high quality but not the original.
The link is generated using information from:

CompetitionHelperExtension::getPhotoUrlPath
CompetitionHelperExtension::getParticipantImage

Did I make a mistake somewhere?
Everything in my house is functional at the moment.