What would be some more interesting conversation topics when with girls?

i've been encountering some younger women lately but not entirely sure what to talk to them about. some i've seen at restaurants or the gym. this one girl i've talked to her a few times now so you think it be getting easier but last convo attempt was rough and took 2 tries and even then i still didn't talk to her about what i had wanted to

so yeah in need of some better ideas , what exactly would they be interested in talking about? at least with someone like me
What would be some more interesting conversation topics when with girls?
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