It's possible to create MySQL (MariaDB) databases directly from the Cpanel. Before you do so, check if you have enough databases left to create.
1. Login to your Cpanel, you can find the link in the mail.
2. Choose the option "MySQL® Database Wizard" from the panel.
3. Enter the desired name for the database and click next.
4. Enter a username, we suggest naming it the same as the database.
5. Click next.
The database will now be linked to this user. It will only be accessible from the hosting package itself. If you want to access it from other services, enable "Remove database".