Issue with lang

Hello,
I try to have “Reset list” or “Synonyms:” translated in french.

I have created a explanatory-dictionary-fr_FR.mo file and put this in wp-content/langauges/plugins.
Then I add this in my functions.php.

add_action( 'plugins_loaded', 'myplugin_load_textdomain' );
/**
 * Load plugin textdomain.
 *
 * @since 1.0.0
 */
function myplugin_load_textdomain() {
	load_plugin_textdomain( 'explanatory-dictionary', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
}

But I can’t manage to make the strings translated (even if I put the .mo file) in the languages folder of the plugin.

Btw, could you update the public/views/explanatory-dictionary.php file?
Erase the tag and put span, then make Synonyms translatable?

<?php if( !empty( $entry->synonyms ) ) :?>
			<span class="explanatory-dictionary-entry-synonyms"><small>- <?php echo __( 'Synonyms:', 'explanatory-dictionary' );?> <span class="synonyms"><?php echo $entry->synonyms; ?></span></small></span>
		<?php endif;?>

Best regards.

https://www.ads-software.com/plugins/explanatory-dictionary/