I’ve been there. The best thing you can do is to find a good therapist, but I understand that may not be possible. Finding a new hobby or even a new show/video game could help ease your depression a little. There are also a ton of great resources and communities online to help you cope. It will get better, I promise. Don’t lose hope!
Stigma can lead people with mental illness to be discriminated against and miss out on work or housing, bullied or to become a victim of violence. It can also mean they don’t seek treatment when they need it.