Samsung
ask for help
They'll make it as difficult as possible, that's one thing you can be sure of.
Can you please elaborate your response?
Responding to Lupanpan:
Built-in apps are most commonly pre-loaded by carriers.
Depending on this, you may need to root your phone.
I recommend that you go to the app administrator and try to remove the apps. If not, from Files Manager may work for you.