Customers can accept cookies on the frontend by,

• When a user visits your store for the first time, the GDPR cookie notice banner pops up.
• The user can click the "Accept" button on the banner to consent to cookies.
• Users may also click "Manage Cookies" to customize their cookie preferences or review the policy.

Read this guide on How to Configure Magento 2 Cookie Consent (GDPR) Compliance Extension in Magento 2 Store to setup this extension.

Here are the another resource to help you get most out of this Magento 2 Cookie Consent (GDPR) Extension.

• Magento 2 GDPR Checklist – Comprehensive Guide for Beginners