No one knows how depressed I am

I guess what the title says. I got a new job and I just suck at it. My ex and I broke up and neither of us can move out, met his new chic last night. Burned but smiled through it, she’s the exact opposite of me. My friends all kinda have their own lives, s/os and stuff. I try to hang but they always got stuff going on and I feel like I’m intruding. I basically work and hang out alone. Nothing interests me anymore. It’s too hard to do like anything. Idk what’s wrong with me. Sometimes I think about just like letting myself fade into this and disappearing. I doubt anyone would notice either, if I stopped showing up, and that sucks. Idk