Depression/anxiety

I’m 19 and I feel so alone. Every time I try to talk to my family about stresses or anxieties they actually laugh at me like I’m joking and brush it off like it’s nothing. I just feel so alone. I just have no motivation right now. No motivation to work. No interest for the things I used to like. All I wanna do is lay in bed, hide, not deal with social situations, sleep or not do anything. I feel like I just waste my days cause I have no motivation to get out of bed to do stuff. I feel hopeless, not beautiful, worthless, etc. my doctor tried to play it off as the only reason why I’m depressed is cause my of my weight. Even tho as a 12/13 year old kid I was healthy and still depressed as hell. No one wants to help me.