<human>: Can you summarize the given text in a few sentences?

I recognize that this is a difficult question for a stranger to respond to but I figured I have nothing to lose. I'm 27 years old and have never had a girlfriend. Frankly, I have become desperate by this point- I see no explanation for my disastrous attempts at dating other than some fundamental and as-of-yet undiagnosed flaw in myself as a potential partner. My current endeavor is to determine what that flaw is.

I have a college degree and a respectable job. I'm a pretty friendly guy. I consider myself fairly interesting: I've traveled to five continents, was in the military for four years, and am an avid scuba diver. I have an excellent sense of humor and I do standup comedy in which I have enjoyed modest but consistent success.  I'm in excellent physical shape, although my face is objectively less than great looking. So far, my hope has been that the aforementioned information about me would sufficiently compensate for my face. I am not sure whether I have simply not done enough in that regard or if I have misjudged the situation from the start.

I've done online dating for 4-5 years. I've had so little success that I've mostly quit. I've moved around alot for work in the past few years so most of my closest friends live in a city 120 miles away or on the opposite coast. 

It seems like most of the advice I have found thus far in life has been to "be yourself". I'm reaching out to an online community of strangers because I've learned through experience that this particular nugget of wisdom has not worked for me. I have been nothing else but myself for years and it's gotten me nowhere. I was hesitant to even make this post out of fear of coming across as whiney and entitled...but, as I've indicated before, I'm at the end of my figurative rope.

Thanks for reading!
<bot>: single my entire life, "be yourself" hasn't worked for me, hoping that by sharing some details about myself I can elicit some introspective questions or advice that will assist me.