Honestly, expecting any single conversation to work out is the wrong frame — that is the bit I would tell anyone signing up today. Is the meet dating site specifically for casual encounters?
If it helps, the risk is rarely the platform itself, it is the pace people push for — that has been consistent for me across a few different platforms.
Having tried a few, the people posting about success are a tiny and unrepresentative sample — it sounds obvious written down, but it took a while to land.