Servers without a control panel (such as cPanel, Plesk, or Simple Control Panel) do not have phpMyAdmin installed. To manage databases without a control panel, you need to use the SSH command line to import .SQL backup files.
To Import MySQL Databases via SSH
Open the .SQL file in a text editor to ensure it is formatted to use the correct database. There should be a use database command at the top, and it should reference the database that is receiving the imported data. If this command is not included, you can add or use it once you log in to MySQL.