Admin notice for custom fields in users dashboard

Hi!
I added some fields in the users dashboard. I made them required but I’d like to display a message if they are empty.

Here is an example (just one field) of what I did

function my_admin_notice() { ?>
    <div class="error">
        <p><?php _e( 'Error!', 'user_street' ); ?></p>
    </div>
    <?php
}

function save_extra_user_profile_fields( $user_id ) {

	if ( !current_user_can( 'edit_user', $user_id ) ) { 

		return false;
	}

	if (!empty($_POST['user_street'])) {
		update_user_meta( $user_id, 'user_street', $_POST['user_street'] );
	}
	else {
		add_action('admin_notices', 'my_admin_notice');
		return false;
	}

}

add_action( 'personal_options_update', 'save_extra_user_profile_fields' );
add_action( 'edit_user_profile_update', 'save_extra_user_profile_fields' );

Unfortunately, nothing happens.

I also tried with add_settings_error but I had the same problem.

Can someone give me a hand or just explain to me what I am doing wrong? It would be much appreciated! Thank you very much!