How to help support your partner when they're depressed

My man is admittedly depressed. For him, depression looks like this:

- He declares the day ruined more often than not, wakes up and says "well here goes another miserable fucking day"

- I try to be patient.. but he truly complains 24/7. His complaint is always the same, (see above) but he's very offended I've run out of new responses to it. Thinks I don't care.

He says he won't seek help for depression because his it has a logical material cause, because he is severely struggling financially.

He claims I only make him feel worse because I'm not supportive enough. I'd like to know how to better help

Anyone been with someone who's depressed? (Long-term)