Adding a date to an article

Good morning. I’m creating a blog and I want to add a date to my articles.
I do it this way:

<?= $page->published()->toDate('d m Y') ?>

and I get this: 21 09 2023

I would like to get:

21 lipiec, 2023

How to do it?

One more question.

Is it good:

<?= $page->published()->toDate('d m Y') ?>

should it be?

<?= $page->published()->toDate('d.m.Y' ) ?>