if you have an SO, what did you do that might help others find theirs?
Be where your prospective SOs are likely to be and do what they're doing. To begin with get used to making friendships with these people; it may develop it may not, but you will be more comfortable with other people and improve your social skills.
Marriage (and Love, imo) is better looked at as finding a friend with whom to share a bigger life. someone whose foibles fit with yours.
I wouldn’t worry about being a non-chad, you sound kind of down on yourself.
Have you tried E-harmony? I have friends that have gotten married thanks to that site.