How do you stop thinking that any cute or attractive girls in real life don't automatically like you? Also, how do I meet more girls?

I have this big problem where, whenever I see a cute girl I rarely ever flirt with them because I just think that they don't want to know me or like me? Whenever I get their number they rarely ever text me back or respond even though we had a great conversation and thought she was genuinely interested in me. But then after a while I stop talking to them. Does anyone else have this problem or is it just me? 🥺🥺🥺
How do you stop thinking that any cute or attractive girls in real life don't automatically like you? Also, how do I meet more girls?
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