BTW, the thing about the guy’s voice bothers me. I get that chemistry is real and that maybe the voice was a turn off. So did you leave because you really thought he might be gay, or did you leave because there was no chemistry? Regardless, giving the date 15 minutes is not cool, barring something creepy or scary. At the very least, you could have had a decent conversation, learned something new about someone, and chalked it up to an experience.
I went on a few blind dates back in the day. Nearly all of them were busts. But there was one guy I had a great time with. There was absolutely no chemistry, but he was interesting to talk to. I’d like to think he enjoyed it also, even though we never saw each other again.
I sense you give up easily because you have some unrealistic expectations about something magical that’s supposed to happen when you date someone. Being pickier as you get older isn’t going to help. Have reasonable expectations. My own kid dates regularly. Sometimes she knows it’s a one off, but sometimes she thinks that the person is worth meeting again, even if she feels no spark.
My D uses dating apps, but she doesn’t really like them. She feels that everyone is condensed into an item for sale. She knows that you don’t get a true idea of someone from a dating app and that’s why she is willing to go on second or third dates if she feels the person was interesting in some way, even without chemistry.
Maybe dating apps aren’t right for you. I agree with others. Volunteer, join some kind of group, join a gym. Book a singles vacation. My D did that, had a great time. She wasn’t going with the intention of finding a partner, but rather, likeminded people. She had a blast and met a couple of cool people who are now friends.