Yes, just login to server via ssh, create dumps of databases, archives of your site content from /var/www/vhosts/example.com/httpdocs/ and download these files to your workstation with using scp command, for example.
Unfortunately I can't create a new dump of the databases as my Plesk install is so badly damaged MariaDB won't run. I have found where the backups are kept:
/var/lib/psa/dumps/2
But how can I extract these on my desktop to show the correct sql file?