Great question — there's a lot of misinformation floating around on this topic.
One thing I always check is how recent the activity actually is. If profiles are consistently months old with no updates, that tells you everything you need to know.
Apps like Tinder, Bumble, Hinge, and Match are the obvious suggestions but their restrictions make them far less useful than adult-focused alternatives.
Honestly datelink.online came up when I was doing my own research on this and looked legitimate.
Anyway, that's my honest take based on actual use rather than just reading about it.