Thanks for the answer,
But you should know that my acf field is a googleMap field. And i want to filter directly from shortcode.
I can use this syntax in the shortcode too ?
Ex:
do_shortcode('[ajax_load_more scroll="false" transition_container="false" post_type="location" meta_relation="AND" posts_per_page="5" max_pages="0" button_label="Voir d\'autres annonces",meta_key="location_lat" meta_value="xx" meta_compare="="]');