Why does everyone think iam flirting, when i am jst a friendly gurl that loves talking and smiling with everyone???

Because for many people, flirting equals smiling, talking a lot, etc. And because of your bubbly personality, they misunderstood you for flirting with other people.
Obviously, they do not know that you have such a wonderful bubbly personality that people like us appreciate. If they talk behind your back, just clarify it to them that you love to talk and smile to everyone and that you’re not flirting. Then, it is up to them to accept that or not. Even if they don’t believe you, continue to be yourself. With a bubbly personality like that, people are more likely to flock to you and enjoy your company. Even though I do not know you, I would probably love to hang out with you in person if I could.....
Obviously, they do not know that you have such a wonderful bubbly personality that people like us appreciate. If they talk behind your back, just clarify it to them that you love to talk and smile to everyone and that you’re not flirting. Then, it is up to them to accept that or not. Even if they don’t believe you, continue to be yourself. With a bubbly personality like that, people are more likely to flock to you and enjoy your company. Even though I do not know you, I would probably love to hang out with you in person if I could.....