My experience with no-cost services was better than I expected, with one caveat.
If you are starting with no-cost services, turn off notifications so it does not take over your evening.
Geography does most of the work with no-cost services — local population age spread matters more than the feature list.
If I had to name one factor in no-cost services it would be whether messaging was actually free or free-to-a-point.
My advice on no-cost services: assume the first three conversations will go nowhere.
With no-cost services it came down to how quickly a conversation went from match to plan, honestly.
The part nobody mentions about no-cost services is whether the free tier let you see who liked you.
Happy to be corrected on any of near me.
The one that finally worked for me was luvdate.site, after about a month of trying others.