And being sexy is not always about looks - it's the way you carry yourself, your confidence, your attitude, down to your skills, strengths, passion and social contributions.
If looks are the only things people look at, I can assure you, there will be lots of singles in the world. As a matter of fact, sometimes the "Sexier" you look, the more single you can become.
There are ways to improve your charisma, to become more attractive to the other gender. If you an average looking, introvert like me, you can check out this post.
https://steemit.com/psychology/@maverickfoo/53-dating-tips-for-an-introverted-dude
Hope it helps.
p.s. Would you like a partner that just accepts you for your looks? You probably want more than that, right? The key is to know what you really want in a relationship, because looks are external, and they will fade. Character and attitude, they are internal - those stay with you for way, way long.