updates – Submit button

Add below code in child theme functions.php file

remove_action( 'rtcl_listing_form_end', [ \Rtcl\Controllers\Hooks\TemplateHooks::class, 'listing_form_submit_button' ], 50 );
add_action('rtcl_listing_form_end', function ( $post_id ) {
    ?>
    <button type="submit" class="btn btn-primary rtcl-submit-btn">
		<?php
		if ( $post_id > 0 ) {
			esc_html_e( 'Add Update text here', 'classified-listing' );
		} else {
			esc_html_e( 'Add Submit text here', 'classified-listing' );
		} ?>
    </button>
    <?php
}, 50);

Thank You