Guide

1. On the left sidebar, hover your mouse cursor over the 'Settings' option and click 'Discussion'.

2. Following that, go to the Default Article Settings section and then switch off the toggle button beside 'Allow People to Post Comments on New Articles'.

3. Likewise, switch off the toggle button beside 'Let Visitors Use a WordPress.com or Facebook account to comment.

4. Once done, click 'Save Settings'.

5. After completing these steps, comments will be disabled on your WordPress website.