There should be mingling events for singles, and maybe once a couple meet and like each other they’ll realize that their whole list of requirements is unattainable; and they’ll get married!
Forget about professional shadchanim, I do not know one person where I live that got married by a pro shadchan. Guy sees girl, guy finds out about girl, guy sends a middleman to ask girl if interested, if yes guy calls girl and they go out. If they want to continue he calls her again,
I am talking about very religious people here. Its not flawless, its actually pretty complicated but at least its a little more realistic.