How to transfer app data from any android device to any android device without using google's servers?

Using /e/OS Migrate to /e/OS
1

I want to transfer all apps from one android phone to another android phone, and I want to keep all app data (i.e. keep access to the account), not install them from scratch, but without using Google’s service.

From Android 8.0 to Android 10, possibly without root.

What options are available?

thanks