Restore My WhatsApp History

I need a specialist who can help me retrieve the complete chat history from my own WhatsApp account. The last backup sits in Google Drive, and I still have full access to both the Google account and the original WhatsApp phone number linked to it. Your task is to guide me through—or directly perform—the restoration so every message, photo, video and attachment contained in that backup appears intact on my phone. I want the recovered chats to load seamlessly in WhatsApp, not just as an exported text file. You should already be comfortable working with Google Drive backups, Android or iOS device storage (depending on what you recommend for the safest path), and any auxiliary tools needed to verify data integrity. Clear, step-by-step communication is essential because I’d like to understand what you’re doing and why, and have confidence that my data remains private throughout the process. When we’re done I expect to open WhatsApp and see the full conversation history exactly as it existed at the time of the backup. If any issues arise—partial restores, missing media, or conflicts with existing data—you’ll troubleshoot until everything is complete.