If your model isn't boot locked then swap the OS. Otherwise:
(1) Don't make a Samsung account or otherwise lean in to the ecosystem.
(2) Much of that crap can be uninstalled or disabled.
(2a) There's more nonsense than you think. I replaced the camera and all sorts of things that shouldn't have been phoning home or displaying ads.
(2b) You need a mechanism for handling updates, since all that crap will come back and all your privacy settings will be reverted. You could automate the process the first time and just search for any new stragglers, but I just disable them and manually handle it when some sort of critical RCE comes out. You're not supposed to be allowed to disable them without nagware, so see (3).
(3) DNS blocking is a godsend. The crap you're unable to remove can be effectively neutered with a little work on this front.
(4) You might want a little extra userspace modification on top of that like remapping the Bixby button.
(1) Don't make a Samsung account or otherwise lean in to the ecosystem.
(2) Much of that crap can be uninstalled or disabled.
(2a) There's more nonsense than you think. I replaced the camera and all sorts of things that shouldn't have been phoning home or displaying ads.
(2b) You need a mechanism for handling updates, since all that crap will come back and all your privacy settings will be reverted. You could automate the process the first time and just search for any new stragglers, but I just disable them and manually handle it when some sort of critical RCE comes out. You're not supposed to be allowed to disable them without nagware, so see (3).
(3) DNS blocking is a godsend. The crap you're unable to remove can be effectively neutered with a little work on this front.
(4) You might want a little extra userspace modification on top of that like remapping the Bixby button.