Secure My WhatsApp Account

I want a clear, practical plan to lock down my own WhatsApp on an Android handset. My first priority is tightening every phone- and account-level privacy setting so that chats, media, and backups stay fully under my control... (Budget: ₹1500 - ₹12500 INR, Jobs: Account Management, Android, Data Protection, Encryption, Incident Response, Linux, Mobile App Development, Testing / QA)