If I have 50 GB icloud storage on my iphone can I use that also with my icloud account on my computer

Alialfarhan wrote:

I can't cancel the 50 GB subscription

See the "Downgrade options" at the bottom of your screenshot.

Cancel upgraded iCloud storage by downgrading to the free 5GB plan. See instructions in: Downgrade or cancel your iCloud+ plan - Apple Support

Sorry, I'm not sure what you mean by "full in my icloud account" and "not full in my icloud storage on my iphone" -- but if your iCloud storage is full, that would be an explanation for why it may not be syncing to all of your devices.

Yes. iCloud storage plans are linked to the Apple ID that you use for iCloud, not to a specific device.

I can't cancel the 50 GB subscription