I want storage upgraded on iCloud

You can easily increase iCloud storage:

Upgrade your iCloud storage plan - Apple Support

but this storage is online at iCloud: it is not on your phone and won't help with your phone storage being full.

The storage on an iPhone cannot be increased, so your only options are to remove some data or to buy a new phone with more storage. The phone won't function properly if you don't have at least 15% of its storage free at all times.

You can purchase iCloud storage by going to Settings, tapping your Apple ID at the top, then selecting iCloud > Manage Storage. If you're viewing this on your iPhone or iPad, you can also use this link to upgrade your storage.

Upgrade your iCloud storage plan - Apple Support