Word that best describes a set of people have gotten used to accepting mediocrity or failure

What is the word to describe when a person or set of people have gotten used to accepting mediocrity or failure

I think resigned would fit here:

resigned: Willing to accept something unpleasant. They are resigned and a little depressed at the thought of losing money for at least the first year.

Several words come close:

Apathetic - having or showing little or no feeling or emotion : SPIRITLESS

Perfunctory - characterized by routine or superficiality, lacking in interest or enthusiasm

Stoic - not affected by or showing passion or feeling

Subdued - lacking in vitality or strength

Many of these can be used to display lack of desire to change, so context can show they're accepting of failure.