Why do guys seem to lost interest in me after a brief conversation or after the first date?

I think I might be really boring or just didn’t take their “bait” or perceive they were hitting on me? No clue lol I’m a really quiet chill girl though. I’m just not good at flirting. Sometimes I’m hit on and the guy thinks I’m pretty but then there’s no follow up or they sort of just walk away

Why do guys seem to lost interest in me after a brief conversation or after the first date?
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