Make JetSmartFilters Expandable & Vice Versa https://crocoblock.com/troubleshooting/articles/making-jetsmartfilters-expandable/

collapse-and-expand-jet-smart-filters.html

<style>

  .jet-filter-label:after {
    content: "˅";
    float: right;
    margin-right: 10px;
  }

  .jet-filter-label.noicon:after{
    content: "";
  }

  .jet-filter-label {
    cursor: pointer;
  }

  .jet-filter-label.noicon {
    cursor: pointer;
  }

</style>

<script>

document.addEventListener('DOMContentLoaded', function() {
    
    makeCollapsible();
    
    jQuery( document ).on( 'elementor/popup/show', function( event, id, instance ) {
        if ( id ) {
            makeCollapsible();
        }
    } );

});

window.addEventListener( 'elementor/popup/show', function( event, id, instance ) {
    
    if ( id ) {
        makeCollapsible();
    }

});

function makeCollapsible() {
    
    jQuery(function($){
        $('.jet-checkboxes-list:not(.collapsible-applied)').slice(0).slideUp( 
            500, 
            function() {
                $( this ).addClass( '.collapsible-applied' );
                $( this ).prev( '.jet-filter-label' ).click(function() {
                    $(this).next().slideToggle();
                    if (!$(this).hasClass('noicon')){
                        $(this).addClass('noicon');
                    }
                    else {
                        $(this).removeClass('noicon');
                    }
                });
            } );
    });
    
}
</script>