quote:

Thank you for being a Google One member. I am hoping this follow through reaches you well.
SWITCH TO LESS STORAGE
In the Google One app (Android):
On your Android phone or tablet, open the Google One app. 
Tap Menu (3 horizontal lines) > Settings > Change membership plan. 
Tap Downgrade options. If there’s no downgrade option, you’re already on the smallest plan. 
Select a downgrade plan. 
Tap Yes, reduce storage. 
To change your plan, tap Continue. 
In the Google One app (iPhone & iPad):
On your iPhone or iPad, open the Google One app. 
Tap Menu (3 horizontal lines) > Membership plans > Manage plan. 
Scroll down to “Downgrade options.” If there’s no downgrade option, you’re already on the smallest plan. 
Select a downgrade plan. 
Confirm your new plan price and details.
Tap Subscribe.
On the web: 
Important: If you’re on the 100 GB plan, there’s no downgrade option. 
Go to one.google.com. 
Click Settings > Change membership plan. 
Select a downgrade plan. 
Review and confirm the new plan pricing and active or charge date.
Click Continue. 
Select your payment method.
Click Subscribe. 
Thanks for contacting Google One. Have a great day.