We advise the folowing settings for Wordpress. y default cpanel's PHP.ini is set to a memeory limit of 164, which is too little for wordpress.
This causes Wordpress to say " the site has experienced a critical error" the soution is to login into Cpanel and edit the php.ini.
To edit it is simply search ini editor in Cpanel to access it, select your domain and change the entries to look like the below.
PHP Multi INI Editor
Select home directory drop down
display_errors = Off
max_execution_time = 30
max_input_time = 60
max_input_vars = 1000
memory_limit = 300M
post_max_size = 80M
session.gc_maxlifetime = 1440
session.save_path = "/var/cpanel/php/sessions/ea-php72"
upload_max_filesize = 200M
zlib.output_compression = Off
The bold details are the general change.