Searching for "WhatsApp old version APK" is a risky game. Third-party download sites are often breeding grounds for malware. Unscrupulous actors often wrap spyware inside the install file of an old WhatsApp version. When a user installs it, they may inadvertently give a bad actor access to their contacts, microphone, and camera.
You mean the third one?
Go to Settings > Chats > Chat Backup and perform a manual backup to Google Drive or your local storage.
The apps were ancient. And there, in the corner, was WhatsApp. Not the sleek, modern green-and-white icon. No—this was the old one. The really old one. The icon was a flat speech bubble with a phone receiver inside. Version 2.11.6. From 2014.
Don’t tell Mom about the ice cream. Our secret.
: Newer versions can be resource-heavy, causing older hardware to lag or crash.
The "old version" may survive on a dusty hard drive somewhere, but in the live network, it is extinct.