I’m askin to unsubscribe gb package on i cloud

If you are talking about your iCloud+ plan, see this Apple article: Downgrade or cancel your iCloud+ plan

Downgrade or cancel your iCloud+ plan - Apple Support (PH)

• Before you downgrade or cancel your iCloud+ plan, first download or remove content that exceeds your new storage amount. To make sure that you don't lose any information, learn how to copy what you store in iCloud.

or

Check your mail box and click the last Apple invoice you have recieved for you iCloud+ plan. 

Then scroll down & see:

👉 If you have any questions about your bill, contact support. This email confirms payment for the iCloud+ plan listed above. You will be billed each plan period until you cancel by downgrading to the free storage plan from your iOS device, Mac or PC.