I am trying to upgrade my iCloud storage but I am having trouble doing it

Click on this link to discover how to "Upgrade your iCloud storage plan" --> https://support.apple.com/HT201318

It would be helpful if you were more specific as to the problem. No money? Cat sitting on your iPhone?

If you do not see the upgrade click on this link to read about about trying different ways --> https://support.apple.com/HT204247 --> section on: See how much iCloud storage you're using

You can also try restarting your device.

If you still have problems, click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product.

Worldwide iTunes support - https://support.apple.com/country-selector/