What can I do about my life?

I'll try to make this brief.

My mom passed away a year ago. My younger brother, while an adult, is chronically ill and can't work.

Our dad just doesn't do much and has battled depression for many years as well. He and my brother don't always see eye to eye and Dad can't/doesn't know how to help my brother. Both of them tell me how much they appreciate all I do for them. Like Netflix bingeing with my bro, cleaning, buying groceries and lunches, taking my bro to his doctor appointments, taking care if the pets etc.

Meanwhile, I feel like I can't move forward iny own life. I feel trapped! I love them and I wanna help but I don't know what to do about my own life. I wanna work or go to college or something. Maybe move out.

With this and other added stress in life, I'm also finding it hard to stay away from old coping mechanisms/adictions. I feel very unproductive and completely trapped in this life. Any ideas? Help me.