I am under psychiatric treatment. And the way we treat it isn't by expecting me to magically integrate to society at my age with my lack of experience but by managing the despair.

That's why I wanted to comment here: I found most comments looking for "ways" to get these guys "dates". But some (and I bet it's most) of those who are sexually lonely (or romantically lonely) are past the social point-of-no-return. They are pestilent to others. Constantly exposing them to environments where they will face rejection at best, excoriation at worst is only going to drive them deeper into misantropy. And that may lead to violence.