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It's kind of hard for any of us to give you an accurate answer without actually seeing what you like, who approaches you, and what the interaction is like.
If you want a particular type of guy to approach you, you have to come into contact with him.
Attractiveness is nowhere near the most important Thing in a relationship, so if a guy otherwise comes Pretty close to being the kid of guy you want to date, then I would advise you to overlook his Looks somewhat (not entirely, of Course).
The last line of your post says it all. Obviously you're not invisible, you just think you're too good for the guys who are interested. That's your right, but exercising it should mean you quit whining about being "invisible" to men. If you want a specific type of partner, and you aren't presently attracting that type, YOU have to actually do something about it.
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