I did a lot of personal development work over a period of 10+ years. At some point, dating got a lot easier. I went from being single most of the time to usually in a relationship. I got married at 41, which was a bit late, but we all move at our own pace.
My little sister is married to a guy who is maybe 5'5" (and I think that's generous). She is 5', and is nearly as tall as him in heels. He's nice and treats her well. She dated a bunch of guys over 6', and likes him the best by far.
This is not to say that tall guys don't have an advantage. I'm sure they do. But fortunately there are a lot of things other than height that also make a difference.