Gzip compression or Mod_deflate not working

Our wordpress website we need to enable gzip compression we followed below instruction to enabled.

1. we have wp rocket plugin this plugin automatically added compression mode_deflate lines in .htaccess
2. We try to enable from server side so we followed this below article instruction to enable gzip compression (https://devops.ionos.com/tutorials/how-to-configure-mod_deflate-for-apache-on-centos-7/)

In this article given edit file sudo nano /etc/httpd/conf.d/mod_deflate.conf and paste the below code

filesMatch .(js|html|txt)$
    SetOutputFilter DEFLATE 
    DeflateCompressionLevel 7 
    DeflateMemLevel 8 
    DeflateWindowSize 10

we try to do this step we can't save the file when we try to saving file its show 'NO SUCH FILE DIRECTORY'.

and also we tried to edit this file /etc/httpd/conf/httpd.conf. This file also can't to save.

Why don't I have a httpd directory?