Transferring WhatsApp from Android to iOS Without Move to iOS

Many Android users are converting to iPhones these days. But as the two platforms are very different, it becomes difficult to transfer apps, the most important of which is WhatsApp.
WhatsApp transfer from Android to iPhone is most commonly done through the Move to iOS Android app. But in many cases, this app cuts a sorry figure when your WhatsApp transfer is incomplete or fails altogether.
A similar thing happened when I tried to transfer WhatsApp from Android to my shiny new iPhone. So I search