Disable Comments Completely
Turns comments off everywhere: closes comments and pings, hides existing comments, and removes the Comments menu, admin bar item and comment feed links.
Snippet Library
Disable Features snippets for WordPress
Snippets that switch off WordPress features you do not use: comments, the block editor, RSS feeds, automatic updates, attachment pages and more. One snippet per feature, so you turn off exactly what you want and nothing else.
Stop Changing "Wordpress" to "WordPress"
Disables the filter that silently rewrites the spelling of WordPress in titles, content and comments, which can break URLs or quoted text.
Turn Off Avatars Everywhere
Stops avatars from being shown in comments, the admin bar and user lists, saving the image requests.