Recover Deleted WhatsApp Messages Android

I accidentally wiped several important WhatsApp conversations from my Android phone, and since then WhatsApp has run its scheduled cloud backups to Google Drive multiple times. The deletions happened over a month ago, so the current backup no longer contains the chats I need... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Android SDK, Cryptography, Data Analysis, Data Extraction, Java, Linux, Mobile App Development, Technical Writing)