Thank you for the question. You need to inform the user about the personal data collected. Examples of personal data are cookie, email, username, name, date of birth. I suggest you to add everything you recognize as used on your website.
If your website has a blog or a form, I also suggest you to create a different privacy policy just for each of them.
Thank you for asking, and let me know if you have any other question :)
Thank you for asking, and let me know if you have any other question :)