Different error format on opinions

Hello, we’ve got problem with formatting of error messages on opinions.

If user don’t check privacy policy checkbox he get bright red error message
If user check privacy policy but don’t choose rating, he is getting popup error alert
If user check privacy policy, choose rating but don’t write his name or email, another alert is showing with different format
And if he fill everything but leave opinion empty, then he gets redirected to wp-comments-post.php site with yet another error

How can I set formatting of all these alerts to show in only one way (as simple, text alerts) instead of four different options?