Try going into cpanel and then backing up WP that way, it's very easy this way. It will backup all your files and databases.
man I feel like a dumbass. been using cpanel for years did not know you could do a full backup of ALL your sites in one shot hahah.
Don't feel too dumb mate. If you've a lot of sites these backups can reach 1gb+ and oftentimes they corrupt as well. But it is nice to have them on hand and they've saved my ass a handful of times too in tight spots.