Add the code to the functions.php and change the contactFormId as required and the page links to redirect.
add_action( 'wp_footer', 'redirect_cf7' );
function redirect_cf7() {
?>
<script type="text/javascript">
document.addEventListener( 'wpcf7mailsent', function( event ) {
if ( '20' == event.detail.contactFormId ) {
location = '<?php echo home_url(); ?>/thank-you-for-applying/';
} else {
location = '<?php echo home_url(); ?>/thank-you/';
}
}, false );
</script>
<?php
}