Few things are as important in high school as friends and popularity. When you leave the high school setting, your world opens up to include many more people to be friends with. And my experience (many moons ago ) is that many of those who were popular and social in the smaller environment of high school are just the average person out in the big wide world, and as a result they can become more friendly.

I wonder if there are interest groups at school or community meetups that you could join, to cultivate friendships with people who share your interests?