Having tried a few, the slow approach tends to produce better outcomes than the volume one — your mileage may well differ. From what I have seen, consistency matters more than intensity here — worth testing yourself rather than taking my word for it. What are the free sites to meet local singles in my area?
A site with no visible moderation is not worth the time — that is roughly where I landed after a lot of trial and error.
From my side, progress is better measured in conversations than in matches — it took me longer than it should have to work that out.