Can someone explain this to me ? Any advice

(No mean comments please)

I don't get guys at all . I wanna know why on these dating sites when you ask a guy what they looking for they say sex buddies /friends with benefits why no one say friendship that turns into relationship. People must not want to commit anymore. I hope it not just me they say that to because it will make me think i don't deserve someone good. Even in real life the guys I meet they just trying to have sex with me I don't know what to do. Any advice 😣?