How to increase the memory in your WordPress website without FTP access, or any real full-stack skills.
Login to your WordPress website
Install a File Manager Plugin
Go to Plugins, download a File Manager Plugin, Install + Activate the plugin.
Activate the Plugin
Select the activated File Manager Plugin in the sidebar menu
Insert the code
Add this code to your wp-config.php file.
define( 'WP_MEMORY_LIMIT', '64M' );
Remember to save the wp-config.php file. Adjust the MB number as needed.
Remove the File Manager Plugin
Deactivate + Delete the File Manager Plugin. I personally don’t like to leave it activated or installed as it can create a security risk.