Bad family environment

I know alot of people here on the community that struggle with this, so can someone share how they cope?

Like seriously my situation is really bad at the moment...

We barely see each other and we barely talk... also we stopped eating all together..

I eat in my room all alone.. and when I'm around my family everyone is so negative and passive agressive all the time!

My sister answers me in such a poor matter I feel like garbage. I have no clue what I did.... yet she's super nice to her online friends..

My dad is mad at work (which I get) but brings it home and lashes at everyone...

And my mother is so overwhelmed with them two and me because of my panic attacks and depression that she responds also in a cruel way.

The only person that saves me is my boyfriend, he's a sweetheart and very supportive. Thing is he can't fix everything obviously. I need coping mechanisms for this negativity and toxicity in my home...

Help??