The Back Up when you need it
Managing multiple wordpress websites means there is gonna be a error sometime, Here is an insight on my backup experiences.
1. you have a wordpress sight with updraft or another backup program, you run it but you dont know where the files are. Know where the backup places the files.
this is going to require you to have cpanel or a filemanager to locate them, most of the time in root directory
2. find these and download them to your local computer. when your wordpress site crashes your backup/restore program will be crashed also so you cant restore what you dont have
3 if it's difficult issue re-set your theme thaen reinstall your backup program then restore from your local saved files
4. pay or get backup service from your hosting company Just do it.
With these simple lessons, hard lessons I have learned you should be able to restore your site without to many tears or moments of terror