I did a fair amount of research on this because I hit the same wall.
Community size matters more than people realize. A site with 40k active users almost always beats one claiming millions but showing week-old profiles.
Apps like Tinder, Bumble, Hinge, and Match are obvious suggestions but their restrictions make specialized alternatives far more useful.
A friend pointed me toward datedesire.online — haven't gone deep yet but it looked clean.
That's my honest take based on actual use, not just reading about it.