there's no way to become popular; popularity is a natural thing that only comes to genetically superior, good looking people. Look at the popular people in your school- what do they have in common? Genetically superior attributes of course, such as being naturally good at sports, good looking (main one), and they're extroverted.
stereotypical popular person when you google "popular kids":
http://www.techienews.co.uk/wp-content/uploads/2015/08/High-School-Kids.jpg (Unsupported image host)
What can you see?
GOOD LOOKING PEOPLE.
now when you google "unpopular kids"
https://s-media-cache-ak0.pinimg.com/564x/2f/9f/9f/2f9f9f7fa4f73ef377c57eae302c5fa5.jpg (Unsupported image host)
as you can see, it's an ugly person. and they're not ugly because they're not dressed well, it's because they're fat, but more specifically they have bad bone structure causing their ugly faces and they probably lisps or braces which is due to BAD BONE STRUCTURES (genetic)
I mentioned extrovertedness being correlated with popularity, but it also highly correlates with LOOKS. if you're ugly you will get treated badly by people, a negative feedback loop from others, causing a ****ty introverted personality? Ever heard of a good looking geek/nerd who sits in their basement all day? Of course not.
LOOKS=PERSONALITY
http://www.tinderseduction.com/wp-content/uploads/2015/08/looks-v-personality.png (Unsupported image host)
tl;dr popularity is entirely based on genetic factors which are out of your control.
if you are attractive (which is almost entirely based on looks), you WILL literally attract people to you