How do I set up automatic backups to several cloud accounts from one place on a Windows PC?

I have several cloud storage accounts. Right now, each cloud has its own script, tool, or some kind of workaround. So, technically, backups exist, but managing them is messy and annoying.

I’d like to bring all of this into one normal panel or interface, where I can set up the schedule, choose folders, connect different cloud accounts, and then simply check that all backup jobs are running as they should.