Attractiveness is in the eye of the beholder, "not handsome" for one person may be incredibly hot for another. There are billions of other people in the world, someone is bound to find your brand of different their new favourite cup of tea.

In general, girls like someone who is challenging, funny, loyal, and bomb in the sack (when you're lucky enough to get that far). Have your own opinions and ideas, be an interesting person with hobbies and passions, if you don't already have something you're passionate about, try new things - likely you'll be able to meet people in the process of trialling new hobbies.

It also depends what you mean by "get girls", do you want to be able to pull in general, or do you want a meaningful connection with one particular girl? The approaches and requirements differ for either.