I don't think there is necessarily anything wrong with current dating websites. They provide a service and you choose to pay for the service or not. Whether dating sites are a good way for you to find a partner or a sex hookup is another matter and a much more complicated problem. I consider the two objectives to be entirely different. You do not need a website for either. My advice would be to make a strategy that works for you and can be applied in real life. Start there. Both are totally doable.
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