For users who need to view the contents of a Google Drive backup on a PC without a phone, third-party software is often required. These tools can log into your Google account, "see" the encrypted WhatsApp folder, and download it in a readable format like PDF or HTML.
Verify your phone number (it must be the same number used for the backup). how to download whatsapp chat backup from gmail
Tools like Tenorshare UltData for Android , WooTechy WhatsMover , or iCareFone Transfer are frequently used for this purpose. For users who need to view the contents