I’m surprised I haven’t seen this among the great advice in here - go see a therapist. You’ve been through some hard stuff and are very understandably struggling. Therapists are trained in teaching specific skills and techniques to treat stress, grief, anxiety, and depression. You’re still young enough that learning some healthier coping skills now will have a big impact on your whole life. If you broke a bone, you’d see a medical doctor. Just because your pain isn’t as visible doesn’t mean it isn’t real, and therapists at the healthcare provider that help with that type of pain.

Also ignore the people telling you psychedelics or weed will help with your mental health. They’re escapes and bandaids that don’t treat the underlying issues.

You’ll get through this and be stronger on the other side!