Remove the searchable from the base select

<select class="" id="js-select2" multiple="multiple">
          foreach ($active_listing_types_response->data as $listing_type) {
            echo '<option value="' . $listing_type->id . '">' . $listing_type->displayname . '</option>';

I Am trying to create a dropdown with multiple selects however instead of it creating a button that i click to bring down the drop down it lets me type in the select, the dropdown shows correctly and selecting works too however I want to remove the ability for the user to type in the base select button.