Did you set up your data directory correctly? It has to be different from the nextcloud installation directory. On a Debian or Ubuntu system, the nextcloud installation directory would be /var/www/nextcloud. The data directory would be /var/www/nextcloud/data. Even better would be to set up a separate data directory like /var/lib/nextcloud or something else. In each case set up the data directory in a different path of the installation directory. A subdirectory is ok, as mentioned above.
Seems your nextcloud is installed in /home/zamarax/public_html/cloud. Check the data directory that is in the config file /home/zamarax/public_html/cloud/config/config.php. Most likely it is set to your installation directory /home/zamarax/public_html/cloud. Change it to /home/zamarax/public_html/cloud/data.