Neat idea, but I find the fact that so many people are depressed to be even more depressing, especially since there's no real way for them to connect.
If the site had a secret sauce, it would be the ability for the users to connect with each other in a meaningful way. Maybe sending each other affirmations of some sort? Sort of like the Sarahah website (https://sarahah.top/). I hope you can crack that code to build something people really engage with.