Control: tags -1 help wontfix
Just for the record, the MariaDB installed by Debian is secure by default. There is no need to run mysql_secure_installation. You should only use that binary if you also used mysql_install_db etc manually to setup the database. So, just run 'sudo apt install mariadb-server' and you are ready to go. To setup an account for your app, run 'sudo mysql' and then from the mysql console add user and grant permissions according to what is needed.