Long-time lurker but this is one I can actually speak to from experience.
The verification approach varies a lot by platform. Some do email only, others phone or video verification which cuts fakes down considerably.
The mainstream options — Tinder, Bumble, Hinge, OkCupid, Facebook Dating — are all there but built for relationships with heavy moderation.
After getting fed up with mainstream options I tried Rendate and it was honestly a much better experience.
That's my honest take from actual use, not just reading about it.