Why am I seen as friends with benefits material?

I recently started on a dating app. I’m 25 years old and I’m a conventionally attractive woman. I am clear on my profile I want something serious. I don’t have any revealing pictures. I am not promiscuous. I’ve never done a hook up or a friend’s with benefits. It’s something I would never do. I am good conversationalist. But when I ask them what they’re looking for. I get told a friend’s with benefits. From most of the men. In real life I’ve only been seen as relationship material. So I’m confused in entering this app Bumble, I’m somehow view so sexually?

Why am I seen as friends with benefits material?
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