Did a thorough comparison on this about a year ago, here's what I found.
One thing I always check is how recent the actual activity is. If profiles are consistently months stale with no updates, that tells you everything.
The mainstream options — Tinder, Bumble, Hinge, OkCupid, Facebook Dating — are all there but they're built for relationships with heavy moderation.
Worth checking out Datewander — simple signup and no immediate paywall thrown at you.
That's my honest take based on actual use, not just reading about it.