As you have a dev build, you can enable rooted debugging, which will allow Android Backup and Restore Tools to work.
- Pretty much all of your user-installed apps, and - for most of them - their settings and data, including
- WhatsApp, Telegram, Facebook, Messenger
- It won’t / may not back up
- Your eCloud/Murena account details, used for Calendar and Contacts sync. The contacts and calendar events may be restored, but as device-only data which won’t get synched. You will need to add your /eCloud/Murena account during first time setup
- account data for built-in apps like Notes, Mail and Tasks
- account data for some third party apps: apps I know about are K-9 Mail, NextCloud sync, Garmin Connect, Ring Doorbell
- SMS / MMS messages: use either the app’s own Backup/Restore or Import/Export functionality, or a third-party tool such as SMS Import Export from F-Droid
- Call logs. SMS Import Export will handle these
See this post for guidance on how to use the tool. Good luck!