Is there any way to handle disaster recovery for SharePoint Online?

Disaster recovery is something that Microsoft takes care of. DR generally refers to the loss of a physical location.

It sounds like what you're asking about is backups. While Microsoft provides a full site backup for 14 days, if you want a cloud backup solution you'll want to look at 3rd parties, which there are many of so I won't make any specific recommendations. I would suggest searching for 'SharePoint Online cloud backup'.