Using "Privacy Mode"

You now have the ability to seamlessly switch the front-end view of your shop to conceal "non-user" features, such as cost prices and margins. This functionality allows you to toggle your shop view from a user-friendly perspective without the need to switch accounts. This feature is particularly advantageous for conducting customer demonstrations and training end users on your store's features, providing a more focused and user-centric experience.

You first need to enable the setting in the store @ Settings > Settings > "Miscellaneous" tab

Depending on the option selected, when you login as a customer, you now have this option.

Enable it to hide all admin functionality while navigating your store as a customer.