How should I approach paying for dates as a woman?

I'm 24 and have only been on a handful of dates ever. I usually pay for my portion or for the entire date. The one time a guy paid for everything things escalated a bit too fast for my liking and I ended the date. I don't like the idea of dinner = sex, and I'm more than happy to pay if it means we're all on the same page.

My questions are:

How should a girl go about getting a relationship in the modern era?

Is it okay to hold off sex until after 4+ dates if the woman (ie, me) pays for her portion of food/drinks/etc?

How do I know if a guy is serious about finding a relationship? I've been fooled before and I don't want to repeat that experience. For the record, I would say I'm a five on a good day, and I don't punch too far up above my weight class.

Are guys okay waiting for sex if they aren't obligated to pay?

How should I approach paying for dates as a woman?
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