Amazon does not let you fully hide order history from your account
You can archive an order to remove it from the main Orders list
Sign in to your Amazon account
Go to Your Orders
Find the order you want to hide
Select Archive order
Confirm the action
Archived orders can still be viewed in Archived Orders
To keep purchases private, use separate Amazon accounts
You can also use Amazon Household for shared access without sharing all order details
Delete browsing history if you want to reduce visible activity
Turn off order notifications on shared email accounts if needed