[deng]

Transferring to a new Android phone without depending on Google cloud is a total nightmare. It doesn't help that there's a ton of outdated information in the net on how to do that. You can see it in this very thread: lots of people saying "do a local Whatsapp backup, transfer the backup manually": this USED to work but does NOT anymore. There is a decryption key in /data/data/com.whatsapp, which of course you can only access on rooted phones (maybe there's a way to approve the transfer when the old phone is still working, not sure).

To the best of my knowledge, it is basically impossible to fully transfer applications locally to new phones without root access.

The ONLY reliable way to transfer to a new phone:

- root your phone

- get NeoBackup (https://f-droid.org/en/packages/com.machiav3lli.backup/) and grant superuser permission to it

- do a FULL backup of the apps you want to transfer, that means it must also include "device protected data"

- restore apps on your new phone

If you'd like regular backups of apps: create scheduled backup with NeoBackup to a local folder and sync them with whatever tool you want to external storage. Good luck with that, you'll need it.