Are my MySQL databases included in my server backups?

No. The panel's Backups feature captures your server's filesystem, which only includes local data such as SQLite .db files under your server directory. MySQL databases run separately and are not included in a filesystem backup, so they need their own backup process.

To back up a MySQL database: open the Databases page, reveal your credentials with "Show Password", and connect using a tool like phpMyAdmin or HeidiSQL. From there, use Export (Quick export, SQL format) to download a .sql file.

To restore: use the same tool's Import function with your .sql file. Note that importing overwrites existing data in that database, so only do this when you are sure.

If you have been relying on "Create Backup" to protect your MySQL data, it has not been; set up a separate, regular export for anything stored in MySQL.