Comment form

Hi kerdezo. The post comment form is generated by the default WP function comment_form(). It is called at the bottom of the theme comments.php file. You could copy comments.php to a child theme and modify the call to the WP function as described in the Codex reference: https://codex.www.ads-software.com/Function_Reference/comment_form.
There are also several tutorials online that discuss modifying the form:
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=wordpress%20replace%20comment%20form.
And there are several plugins available that deal with comments:
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=wordpress%20comments%20plugin

THanks bdbrown I gonna read.