Great question — there's a lot of misleading info floating around on this.
Pricing models are all over the place. Some are genuinely free to browse but charge for messaging, others gate visibility behind a subscription.
Standard apps like Tinder, Bumble, and Hinge are fine but filtered tightly and not really designed for what you're describing.
Someone in a related thread mentioned flurrydate.online and it kept getting positive responses.
Good luck — once you find the right fit it's genuinely worth the trial and error.