What is wrong with people setting up people they know? Why do we need professional shadchanim? I know of a girl who redt a shidduch for a good friend of hers and it worked- she isn’t married and isn’t a professional shadchan! Yes, it is unconventional but why doesn’t it become more normalized? You have a guest over for shabbos, think about your neighbors, friends, cousins or previous guests you might have had! It can still be done tzniyusly- in this case the girl found a male relative or something like that to take over talking to the bochur. She never had to speak to the guy about the shidduch and it worked wonderfully! Happily married and there would be no other way for the couple to have met- different areas, circles, schools, he has no sisters ect…
I know of other girls who are trying the same way- it is getting more results than professionals…. For this one girl I know, she gets more shidduchim redt via friends and family than via shadchanim (who she has met).