Personal wiki's are not allowed on fandom. Also, I wouldn't post personal info on this platform.
Wiki's are collaborative "encyclopedia" type body of knowledge. Not for personal use. Divulging personal info is a safety risk.
How to delete wiki
Contact fandom staff: fandom.zendesk.com/hc/en-us/requests/new
I've been wondering about that too for a quite, but I think it's pretty obvious: wikis shouldn't be a "personal thing", both figuratively and literally.
If it was a story or universe thing, I guess that's okay but it would be better if it was a popular one and not just by one person.