From personal experience, I would say that if they look better than you by that much, then they really don't need to be here to find someone, so just tread with caution. Too good to be true usually is.
I've used a few dating sites previously but I never had problems with any. I found this list of dating agencies on the internet https://bridestopsites.com/. I haven't tried all of them but some of them were quite successful for me!