Great match, but she only wants to be friends

I sent a like to a girl, and she matched with me the same day. We hit it off on a variety of topics, from dancing, to what we do for work, and music we listen to. I mean paragraphs back and forth for about a hour. She was really cute too.

I asked her out and then she told me that she was only on Hinge looking for friends. She said she thought her and I could be friends because of the things we have in common. It was really frustrating for me be told that, because of how well we were getting along. It's like everything clicked except for when it came to what she was looking for.

I said I was fine with being friends and we ended up following each other on Instagram. But shortly after that I told her we probably shouldn't continue talking (at least for now) because my level initial interest in her doesn't put me in the best position to be just friends with her right now. She understood and was a sweetheart about it. She said if I ever wanna reach out I can, and I told her if she's ever looking for more she can feel free to message me.

1. I don't understand why people go on dating apps for friends.

2. this isn't the first time this has happened to me.