It is a shame Adb backup is being deprecated. Even twrp now only works on some devices. Titanium backup has not been updated in so long, it still requires root and doesn't backup full data for all apps anyway.
I have been trying out seedvault which is like google backup but you can back up to cloud or locally (although i see even that is am issue on your samsung as it won't load usb keys). And for full app data backup oandbackupx, which is excellent but still requires root for full backup.
Ultimately, the only solution here is to never buy samsung android devices.
I have been trying out seedvault which is like google backup but you can back up to cloud or locally (although i see even that is am issue on your samsung as it won't load usb keys). And for full app data backup oandbackupx, which is excellent but still requires root for full backup.
Ultimately, the only solution here is to never buy samsung android devices.