If it helps, expecting any single conversation to work out is the wrong frame — happy to be argued with on that one. For what it is worth, a month is about the minimum before judging any platform — it is not complicated, it is just easy to skip. Is free online dating without registration even possible on modern smartphones?
Having tried a few, the price is rarely the problem, the auto-renewal usually is — your mileage may well differ.
If it helps, consistency matters more than intensity here — that has been consistent for me across a few different platforms.