My sibling would probably kill theirself if there wasn't someone to help them. I've tried to help my sibling get to where they're at least doing volunteer work or something, which my sibling said they were willing to do, but they have kept dragging feet. Just in bed for 13ish years.

I visited my dad for a week last year, but my sibling apparently stayed inside the entire time.

I don't think being around other people would help. They generally just find ways to hurt me or make things worse in someway, either accidentally or deliberately. All my in-person interactions with people have either been neutral (like asking someone at a store where something is) or negative (every counselor or psychiatrist, other students when I went to school). The only "safe" people are relatives. I think the last time I had a positive in-person interaction with a non-relative was in the 90s. I don't really have anything to offer other people, and want to avoid being some kind of parasite as much as possible.