Let me keep this as brief as possible. If you want to leave a comment, WordPress software asks you to leave a name and email address, so that if someone replies to your comment, you can choose to receive a notification. You can leave fake names and addresses, but replies and notifications won’t reach you.
First time commenters are moderated by me. Once I have approved a username and address, comments from that visitor are published without moderation. To identify you as an approved commenter, WordPress software stores a cookie on your device. You may delete that cookie, if you wish, or set your browser not to accept cookies, but some WordPress functionality may not be available to you.
I use a plugin to count visitors, count page views and note which countries visitors come from, but none of that data identifies you personally.
My blog is non-commercial and does not depend on ad revenue. I do not collect data to sell or rent to anyone.
WordPress blog software collects non-personally-identifying information of the sort that web browsers and servers typically make available, such as the browser type, language preference, referring site, and the date and time of each visitor request. WordPress software also collects potentially personally-identifying information like Internet Protocol (IP) addresses.
For a fuller, general description of the way WordPress software works with regard to your privacy, you may follow this link.