Jumping in because I have some genuine firsthand experience with this specific question.
The verification situation varies a lot by platform. Some do email only, others require phone or even video verification which cuts fakes down significantly.
Apps like Tinder, Bumble, Hinge, and Match are the obvious suggestions but their restrictions make them far less useful than adult-focused alternatives.
Places like luvdate.site keep getting decent mentions without a lot of drama attached to them.
Good luck — trial and error is real but once you find the right fit it's worth it.