Even the hobbits fail - Frodo claims the ring at the last minute and it is only the intervention of Providence (in the guise of Gollum) that saves the day.
Ah yes, fair point. I think it’s Gandalf that says the Hobbits are stouter than even the Wise know or something to that effect but, like you say, they aren’t impervious to the charm of the ring. Except perhaps Sam, with his abundance of hobbit-sense and love for Frodo.