Restoring after white screen from upgrade or even hack?

I’ve had a heck of a time with my sites being hacked in wordpress over the past few months. It has been an absolute nightmare, so I’m seriously considering using this plugin. It sounds great! I do have a question though:

If my site gets the white screen of death due to an automatic wordpress update or an incompatible plugin, how do I restore? I would think that I wouldn’t be able to get to the backup files to click a button to restore if I can’t even get to the admin area.

Any help greatly appreciated, thanks!

https://www.ads-software.com/plugins/updraftplus/