How to stop being the girl everyone just sees platonically

I'm 26F but I've never had a boyfriend before or even had my first kiss. Guys never flirt with me and don't even tease me like like they do with everyone else and they're just nice and polite with me.

I think that guys like me as a person because I'm friendly, cheerful and nice to everyone and I've been described as "sweet" and "cute" by others. The thing is, especially at my age I think this vibe is what keeps me in the friend/acquaintance zone and means that guys don't really see me as girlfriend material. How can I change this?