Lost years of music creation and production - can iCloud help me ?

I mistakingly used iCloud to store documents and desktop on 3 macs.

Recently needed to make room on my macbook which I don't use for music production - this is done on my main mac.

Very unfortunately, I had chosen to back up desktop and documents on iCloud on that macbook. But as system was slow to act (nothing done after an hour), I just wiped the content on the macbook. The last thing I would have expected was, it would also wipe on my mac mini!

This morning, launching Pro Tools, I realize I no longer have any of the several dozens of production projects available !! Can't see these neither on hard drive, nor on iCloud.

I just can't yet believe this. Just can't imagine there is no way I could claim that content. Just can't believe it's... gone! Does iCloud (paid monthly at high-price) have some kind of a backup to recover that stuff ?