I don’t think that they don't understand mental health challenges. The reason they aren’t treating you isn’t lack of knowledge, they just aren’t there to treat you. They just aren’t hired to treat anyone. Their job is more of a vocational assistance. If you want treatment, employment agencies or vocational disability service isn’t the place for it. I’d speak to a doctor about getting treatment.
I am very familiar with vocational disability services in my state (professionally-part of what I do for a living and family members experience) and they provide ton of help to people with disabilities: education, re-education, employment and so on. They do not provide treatment. Not because they lack knowledge but because it’s not their job description. I understand if it’s different in Sweden but that’s how it’s here.
What does your doctor suggest re treatment? And is your goal to find employment?