work on one single at a time: find out if they’re ready to get married, what they’re looking for, and help them find their proper match. keep doing this – this is hishtadlus. don’t worry about the math – that’s krias yam suf – that’s Hashem’s department. keep davening for the singles and keep setting them up with appropriate matches.
(and raise children who are emotionally healthy who desire and know how to establish relationships and know how to build a bayis neeman b’yisrael).
for any singles out there reading this thread: relax. daven. do your hishtadlus and work on your bitachon. Hashem will help you! Ignore all these doomsayers.