HI LUMEN: I'd like to join
Mutt in welcoming you! I'm so sorry about your situation with your mom. It can be alarming when we realize that "our normal" isn't normal.
How significant is your mom's physical disability? Is she able to work? Does her disability necessitate that she can't live alone?
It must be very lonely, without anyone other than your mother in your life. Are you able to meet friends at school or work that you can socialize with?
she is so depressed at home but puts on a different face when we go out, i try to tell the doctors that its a mask but either they don't care or they think i am just another millennial who doesn't know how to cope with life
Sometimes, privacy laws can get in the way, when family members try to talk to doctors about relatives. Is your mom getting any treatment for depression at the current time, or has she convinced the doctors that she is okay?
It is common for people to avoid treatment that they really need. Unfortunately, many don't want prompting from a family member. The only thing you can do is to set some boundaries for you.
What are you doing to take care of your well being? Any hobbies, sports, exercise?