Some people have more universal charisma and some people have charisma which speaks to certain people. The Actor Jason Ritter is a prime example of someone I believe to have exceptional charisma. He seems shy but not anxious, sweet, charming, down to earth and with a quiet confidence. He's also very handsome in my eyes. But not everyone will think so. Some would argue Brad Pitt is much more charismatic and I would not agree. We all see things differently and have different tastes. Some people WILL be more universally charismatic but most people simply aren't. We appeal to a certain percentage of the population and that is it. Some people have looks that appeal to 90% of the population while others have looks which appeal to 5% of the population. The odds are less in our favor if we are part of the 5% and not the 90% but there are so many people in this world that are chances are still high that we will meet that person who we at suited for. The more people we meet, the better our odds of finding them. Do work in your confidence and get out there talking and meeting people. Good luck