How to sync certain Lightroom classic folders to CC storage space

Hello,

I've been searching for hours to understand, if possible, how to sync certain folders from Lightroom Classic to the CC storage space.

I basically want to use the available CC storage space as a backup in case my main hard drive crashes. If I can get this work properly, I'll buy more storage space to increase the default 20 GB.

I understand LR doesn't actually store the physical files, only keeps track of all the edits done to the files present in the LR catalogue. But is there a way I could somehow sync certain folders so that files get copied onto the cloud?

I don't use Lightroom CC at all. I only use LR Classic and PS on my main laptop.

Thank you for you help.

Catherine