How do i help my partner who is battling depression? 😭

We both have been going through a hrd time for a while now. His family have been giving him lots of problems and hes under so much pressure with work and business and home. He lives with his sister who keeps banging the doors,being moody like all the time and its eating him. She does that all the time and his mother is always siding with the daughter and never by his side. We want to move out but we have nothing and we so broke.

Hes been getting angry all the time and i am trying so hard to be there buti dont know what to do. Give me some advice please.