I have a Macbook and an iPhone who are both not syncing to iCloud, but the iCloud itself is filled with pictures that i want deleted. Is there any way of doing this without first having to delete thousands of pictures on one of them?

I tried doing it on the iPhone but apparently it says you can cancel it for 30 days, meaning i still cannot use the iCloud library since they're still in my "recently deleted", meaning if i enable it on any device, it's still going to download those thousands of pictures. Is there a way to just hard delete everything?