It sounds really risky as the authorities could intercept it and you would end up with lots of legal trouble on top of your current issues, there is a risk of getting scammed, putting yourself in a dangerous situation to meet with shady strangers (people you've most likely never met), and sometimes it could be a law enforcement sting. So my advice would be to either move to a different nation (if possible), if not, choose a different method that is more or less, available in your country.
Since you are in Europe, geographically, you are close to the Netherlands, Belgium, and Switzerland, so if you are able to get a diagnosis and prove that your ill enough (physically or mentally) and that there is little or no hope of improvement, then you might be able to qualify for euthanasia.